WO2024036627A1 - 通信方法、装置、设备、存储介质、芯片、产品及程序 - Google Patents

通信方法、装置、设备、存储介质、芯片、产品及程序 Download PDF

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Publication number
WO2024036627A1
WO2024036627A1 PCT/CN2022/113724 CN2022113724W WO2024036627A1 WO 2024036627 A1 WO2024036627 A1 WO 2024036627A1 CN 2022113724 W CN2022113724 W CN 2022113724W WO 2024036627 A1 WO2024036627 A1 WO 2024036627A1
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WIPO (PCT)
Prior art keywords
scaling factor
tbs
pdsch
scaling
dci
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PCT/CN2022/113724
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English (en)
French (fr)
Inventor
赵楠德
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to PCT/CN2022/113724 priority Critical patent/WO2024036627A1/zh
Priority to CN202280098487.4A priority patent/CN119586271A/zh
Publication of WO2024036627A1 publication Critical patent/WO2024036627A1/zh
Priority to US18/985,293 priority patent/US20250119249A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H04W72/232—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states

Definitions

  • the embodiments of this application relate to the field of mobile communication technology, and specifically relate to a communication method, device, equipment, storage medium, chip, product and program.
  • end devices and network devices can use transport blocks to transmit information.
  • transport blocks Physical Downlink Shared Channel (PDSCH) with Transport Block Size (TBS) scaling has been a long-standing concern in this field.
  • PDSCH Physical Downlink Shared Channel
  • TBS Transport Block Size
  • Embodiments of the present application provide a communication method, device, equipment, storage medium, chip, product and program.
  • embodiments of the present application provide a communication method, which method includes:
  • the terminal device receives a system message, where the system message carries first indication information
  • the terminal equipment receives downlink control information DCI used to schedule the physical downlink shared channel PDSCH;
  • the terminal equipment receives the PDSCH with a transport block size TBS scaled.
  • embodiments of the present application provide a communication method, which method includes:
  • the network device sends a system message, where the system message carries first indication information
  • the network device sends downlink control information DCI used to schedule the physical downlink shared channel PDSCH;
  • the first indication information and/or the DCI are used for the terminal equipment to receive the PDSCH with a transport block size TBS scaled.
  • an embodiment of the present application provides a communication device, including:
  • a communication unit configured to receive system messages, where the system messages carry first indication information
  • the communication unit is also configured to receive downlink control information DCI used to schedule the physical downlink shared channel PDSCH;
  • the communication unit is further configured to, according to the first indication information and/or the DCI, the terminal equipment receive the PDSCH with a transport block size TBS scaled.
  • an embodiment of the present application provides a communication device, including:
  • a communication unit configured to send a system message, where the system message carries first indication information
  • the communication unit is also used to send downlink control information DCI for scheduling the physical downlink shared channel PDSCH;
  • the first indication information and/or the DCI are used for the terminal equipment to receive the PDSCH with a transport block size TBS scaled.
  • embodiments of the present application provide a communication device, including: a processor and a memory,
  • the memory stores a computer program executable on the processor
  • embodiments of the present application provide a computer storage medium that stores one or more programs, and the one or more programs can be executed by one or more processors to implement the first aspect. Or the method described in the second aspect.
  • embodiments of the present application provide a chip, including: a processor configured to call and run a computer program from a memory to implement the method described in the first or second aspect.
  • inventions of the present application provide a computer program product.
  • the computer program product includes a computer storage medium.
  • the computer storage medium stores a computer program.
  • the computer program includes instructions that can be executed by at least one processor. When When the instructions are executed by the at least one processor, the method described in the first aspect or the second aspect is implemented.
  • embodiments of the present application provide a computer program, which causes a computer to execute the method described in the first aspect or the second aspect.
  • the terminal device receives a system message, wherein the system message carries first indication information; the terminal device receives downlink control information DCI used to schedule the physical downlink shared channel PDSCH; according to the first indication information and/or the DCI, the terminal device receives the PDSCH with a transport block size TBS scaled.
  • the terminal equipment can receive the TBS-scaled PDSCH with a transport block size according to the first indication information and/or the DCI, thereby being able to accurately receive the TBS-scaled PDSCH.
  • Figure 1 is a schematic diagram of an application scenario according to the embodiment of the present application.
  • Figure 2 is an architectural schematic diagram of a communication system provided by an embodiment of the present application.
  • FIG. 3 is a schematic architectural diagram of another communication system provided by an embodiment of the present application.
  • Figure 4 is a schematic diagram of an NTN scenario based on transparent transmission and forwarding satellites provided by an embodiment of the present application
  • Figure 5 is a schematic diagram of an NTN scenario based on regeneration and forwarding satellites provided by an embodiment of the present application
  • Figure 6 is a schematic flow chart of a communication method provided by an embodiment of the present application.
  • Figure 7 is a schematic flow chart of another communication method provided by an embodiment of the present application.
  • FIG. 8 is a schematic flowchart of a UE receiving a TBS scaling factor provided by an embodiment of the present application
  • FIG. 9 is a schematic diagram of a TBS scaling process for a UE performing PDSCH provided by an embodiment of the present application.
  • Figure 10 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • Figure 11 is a schematic diagram 2 of the structure of a communication device provided by an embodiment of the present application.
  • Figure 12 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • Figure 13 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • Networks include terrestrial communication network (Terrestrial Network, TN) and non-terrestrial communication network (Non Terrestrial Network, NTN).
  • TN terrestrial communication network
  • NTN Non Terrestrial Network
  • NTN systems may include NR-NTN and IoT-NTN systems.
  • Figure 1 is a schematic diagram of an application scenario of an embodiment of the present application.
  • the communication system 100 may be a terrestrial communication network system, and the communication system 100 may include a terminal device 110 and a network device 120.
  • the network device 120 may communicate with the terminal device 110 through the air interface. Multi-service transmission is supported between the terminal device 110 and the network device 120.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE -A Advanced long term evolution
  • NR New Radio
  • evolution system of NR system LTE-based access to unlicensed spectrum (LTE-U) system on unlicensed spectrum, NR on unlicensed spectrum (NR -based access to unlicensed spectrum (NR-U) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), LTE time division dual Time Division Duplex (TDD), Universal
  • the network device 120 in this embodiment of the present application may include an access network device 121 and/or a core network device 122.
  • the access network device may provide communication coverage for a specific geographical area and may communicate with terminal devices 110 (eg, UEs) located within the coverage area.
  • terminal devices 110 eg, UEs
  • the terminal device in any embodiment of the present application is a device with wireless communication functions, which can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed In the air (such as on airplanes, balloons, satellites, etc.).
  • the terminal equipment in any embodiment of this application may be called user equipment (User Equipment, UE), mobile station (Mobile Station, MS), mobile terminal (Mobile Terminal, MT), subscriber unit, subscriber station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communications device, user agent or user device.
  • Terminal devices may include one or at least a combination of the following: Internet of Things (IoT) devices, satellite terminals, Wireless Local Loop (WLL) stations, Personal Digital Assistant (PDA) ), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, servers, mobile phones, tablets (Pad), computers with wireless transceiver capabilities, handheld computers, desktop computers, personal computers Digital assistants, portable media players, smart speakers, navigation devices, smart watches, smart glasses, smart necklaces and other wearable devices, pedometers, digital TV, virtual reality (Virtual Reality, VR) terminal equipment, augmented reality (Augmented Reality, AR) terminal equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grid Wireless terminals, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, and vehicles, vehicle-mounted equipment, vehicle-mounted modules, and wireless devices in the Internet of Vehicles system Modem, handheld device, customer terminal equipment (Customer Premise Equipment, C
  • the terminal device 110 may be any terminal device, including but not limited to a terminal device that adopts a wired or wireless connection with the network device 120 or other terminal devices.
  • the terminal device 110 may be used for device-to-device (Device to Device, D2D) communication.
  • D2D Device to Device
  • the access network equipment 121 may include one or at least a combination of the following: an evolutionary base station (Evolutional Node B, eNB or eNodeB) in a Long Term Evolution (LTE) system, a next-generation wireless access network (Next Generation Radio Access Network (NG RAN) equipment, base stations (gNB) in NR systems, small stations, micro stations, wireless controllers in Cloud Radio Access Network (CRAN), wireless fidelity (Wireless- Fidelity, Wi-Fi) access points, transmission reception points (transmission reception points, TRP), relay stations, access points, in-vehicle equipment, wearable devices, hubs, switches, bridges, routers, future evolved public land mobile Network equipment in the network (Public Land Mobile Network, PLMN), etc.
  • an evolutionary base station Evolutional Node B, eNB or eNodeB
  • NG RAN Next Generation Radio Access Network
  • gNB base stations
  • CRAN Cloud Radio Access Network
  • Wi-Fi Wireless- Fidelity
  • TRP transmission reception points
  • the core network device 122 may be a 5G core network (5G Core, 5GC) device, and the core network device 122 may include one of the following or a combination of at least two: Access and Mobility Management Function (AMF), Authentication Server Function (AUSF), User Plane Function (UPF), Session Management Function (SMF), Location Management Function (LMF).
  • the core network device may also be the Evolved Packet Core (EPC) device of the LTE network, for example, the session management function + core network data gateway (Session Management Function + Core Packet Gateway, SMF + PGW-C) equipment.
  • EPC Evolved Packet Core
  • SMF +PGW-C can simultaneously realize the functions that SMF and PGW-C can realize.
  • the above-mentioned core network device 122 may also be called by other names, or a new network entity may be formed by dividing the functions of the core network, which is not limited by the embodiments of this application.
  • Various functional units in the communication system 100 can also establish connections through next generation network (NG) interfaces to achieve communication.
  • NG next generation network
  • the terminal device establishes an air interface connection with the access network device through the NR interface for transmitting user plane data and control plane signaling; the terminal device can establish a control plane signaling connection with the AMF through the NG interface 1 (referred to as N1); access Network equipment, such as the next generation wireless access base station (gNB), can establish user plane data connections with UPF through NG interface 3 (referred to as N3); access network equipment can establish control plane signaling with AMF through NG interface 2 (referred to as N2) connection; UPF can establish a control plane signaling connection with SMF through NG interface 4 (referred to as N4); UPF can exchange user plane data with the data network through NG interface 6 (referred to as N6); AMF can communicate with SMF through NG interface 11 (referred to as N11) SMF establishes a control plane signaling connection; SMF can establish a control plane signaling connection with PCF through NG interface 7 (referred to as N7).
  • N1 AMF through the NG interface 1
  • access Network equipment such as the next generation wireless
  • Figure 1 exemplarily shows a base station, a core network device and two terminal devices.
  • the wireless communication system 100 may include multiple base station devices and other numbers of terminals may be included within the coverage of each base station.
  • Equipment the embodiments of this application do not limit this.
  • Non-terrestrial networks generally use satellite communications to provide communication services to ground users.
  • satellite communications have many unique advantages.
  • satellite communication is not restricted by the user's geographical area. For example, general land communication cannot cover areas such as oceans, mountains, deserts, etc. where communication equipment cannot be installed or where communication coverage is not available due to sparse population.
  • general land communication cannot cover areas such as oceans, mountains, deserts, etc. where communication equipment cannot be installed or where communication coverage is not available due to sparse population.
  • satellite Satellites due to a satellite Satellites can cover a large area of the ground, and satellites can orbit the earth, so theoretically every corner of the earth can be covered by satellite communications.
  • satellite communications have great social value.
  • Satellite communications can cover remote mountainous areas and poor and backward countries or regions at a lower cost, allowing people in these areas to enjoy advanced voice communications and mobile Internet technologies, which is conducive to narrowing the digital divide with developed regions and promoting development in these areas.
  • satellite communication has a long distance, and the cost of communication does not increase significantly as the communication distance increases; finally, satellite communication has high stability and is not restricted by natural disasters.
  • NTN technology can be combined with various communication systems.
  • NTN technology can be combined with NR systems to form NR-NTN systems.
  • NTN technology can be combined with the Internet of Things (IoT) system to form an IoT-NTN system.
  • IoT-NTN system may include an NB-IoT-NTN system and an eMTC-NTN system.
  • FIG 2 is an architectural schematic diagram of a communication system provided by an embodiment of the present application.
  • the communication system 200 in Figure 2 can be a non-terrestrial communication network system.
  • the communication system 200 includes a terminal device 201 and a satellite 202. Wireless communication can be performed between the terminal device 201 and the satellite 202.
  • the network formed between the terminal device 201 and the satellite 202 may also be called NTN.
  • the satellite 202 may have the function of a base station, and the terminal device 201 and the satellite 202 may communicate directly. Under the system architecture, the satellite 202 can be called a network device.
  • the communication system 200 may include multiple network devices 202, and the coverage of each network device 202 may include other numbers of terminal devices, which is not limited in the embodiments of the present application.
  • FIG. 3 is an architectural schematic diagram of another communication system provided by an embodiment of the present application.
  • the communication system 300 in Figure 3 can be a non-terrestrial communication network system.
  • the communication system 300 includes a terminal device 301 and a satellite 302. Wireless communication can be performed between the terminal device 301 and the base station 303, and the satellite 302 can communicate with the base station 303.
  • the network formed between the terminal device 301, the satellite 302 and the base station 303 may also be called NTN.
  • the satellite 302 may not have the function of a base station, and the communication between the terminal device 301 and the base station 303 needs to be relayed through the satellite 302 .
  • the base station 303 can be called a network device.
  • the communication system may include multiple base stations 303, and the coverage of each base station 303 may include other numbers of terminal devices, which is not limited in the embodiments of the present application.
  • the base station 303 may be the access network device 121 in Figure 1.
  • satellite 202 or satellite 302 includes but is not limited to: low-Earth orbit (Low-Earth Orbit, LEO) satellite, medium-Earth orbit (Medium-Earth Orbit, MEO) satellite, geosynchronous orbit (Geostationary Earth Orbit, GEO) Satellites, High Elliptical Orbit (HEO) satellites, etc. Satellites can use multiple beams to cover the ground. For example, a satellite can form dozens or even hundreds of beams to cover the ground. In other words, a satellite beam can cover a ground area with a diameter of tens to hundreds of kilometers to ensure satellite coverage and improve the system capacity of the entire satellite communication system.
  • the altitude range of LEO satellites can be 500 kilometers to 1,500 kilometers, and the corresponding orbital period can be about 1.5 hours to 2 hours.
  • the signal propagation delay of single-hop communication between users can generally be less than 20 milliseconds, and the maximum satellite visibility time It can be 20 minutes.
  • the signal propagation distance of LEO satellites is short and the link loss is small, so the transmission power requirements of the user terminal are not high.
  • the orbital altitude of GEO satellites can be 35,786km, and the rotation period around the earth can be 24 hours.
  • the signal propagation delay of single-hop communication between users can generally be 250 milliseconds.
  • satellites use multiple beams to cover the ground.
  • One satellite can form dozens or even hundreds of beams to cover the ground; one satellite beam can cover dozens to hundreds of kilometers in diameter.
  • Ground area In order to ensure satellite coverage and improve the system capacity of the entire satellite communication system, satellites use multiple beams to cover the ground.
  • One satellite can form dozens or even hundreds of beams to cover the ground; one satellite beam can cover dozens to hundreds of kilometers in diameter. Ground area.
  • Figures 1 to 3 are only used as examples to illustrate the systems to which the present application is applicable. Of course, the methods shown in the embodiments of the present application can also be applied to other systems. Additionally, the terms “system” and “network” are often used interchangeably herein.
  • the term “and/or” in this article is just an association relationship that describes related objects, indicating that three relationships can exist. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and they exist alone. B these three situations.
  • the character “/” in this article generally indicates that the related objects are an "or” relationship.
  • the "instruction” mentioned in the embodiments of this application may be a direct instruction, an indirect instruction, or an association relationship.
  • A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B. relation.
  • the "correspondence” mentioned in the embodiments of this application can mean that there is a direct correspondence or indirect correspondence between the two, it can also mean that there is an associated relationship between the two, or it can mean indicating and being instructed. , configuration and configured relationship.
  • the "predefined”, “protocol agreement”, “predetermined” or “predefined rules” mentioned in the embodiments of this application can be preset in the equipment (for example, including terminal equipment and network equipment).
  • predefined can refer to what is defined in the protocol.
  • the "protocol" may refer to a standard protocol in the communication field, which may include, for example, LTE protocol, NR protocol, and related protocols applied in future communication systems. This application does not limit this. .
  • Satellites can be divided into two types based on the functions they provide: transparent payload and regenerative payload.
  • transparent transmission and forwarding satellites it can provide wireless frequency filtering, frequency conversion and amplification functions, and can provide transparent forwarding of signals without changing the waveform signal it forwards.
  • regenerative forwarding satellites in addition to providing wireless frequency filtering, frequency conversion and amplification functions, it can also provide demodulation/decoding, routing/conversion, encoding/modulation functions, which have some or all of the functions of a base station.
  • one or more gateways may be included for communication between satellites and terminals.
  • Figure 4 is a schematic diagram of an NTN scenario based on transparent transmission and forwarding satellites provided by an embodiment of the present application.
  • Figure 5 is a schematic diagram of an NTN scenario based on regenerative forwarding satellites provided by an embodiment of the present application.
  • the gateway and the satellite communicate through the feeder link, and the satellite and the terminal can communicate through the service link.
  • the satellites communicate with each other through inter-star links, gateways and satellites communicate with each other through feeder links, and satellites and Terminals can communicate through service links.
  • C-RNTI Cell-Radio Network Temporary Identifier
  • MCS-C-RNTI Modulation Coding Scheme Cell-Radio Network Temporary Identifier
  • TC-RNTI Temporary Cell Wireless Temporary Cell-Radio Network Temporary Identifier
  • CS-RNTI Configured Scheduling-Radio Network Temporary Identity
  • SI-RNTI System Information Radio Network Temporary Identifier
  • CRC Cyclic Redundancy Check
  • N RE min(156,N' RE ) ⁇ n PRB to determine the total number of REs used for PDSCH transmission (N RE ), where n PRB is the total number of PRBs allocated to the terminal equipment.
  • N info N RE ⁇ R ⁇ Q m ⁇ v to obtain the unquantized intermediate variable N info , where R is the target code rate, Q m is the modulation order, and v is the number of transmission layers.
  • P-RNTI Paging-Radio Network Temporary Identifier
  • RA-RNTI Random Access-Radio Network Temporary Identifier
  • MsgB- Radio Network Temporary Identifier MsgB-RNTI
  • TBS can be effectively reduced while the total number of time-frequency resources used for PDSCH transmission remains unchanged, thereby improving coverage performance.
  • the relevant technical solution supports TBS scaling of PDSCH scheduled by DCI 1_0 using P-RNTI, RA-RNTI or MsgB-RNTI scrambling CRC, and can scale TBS to up to 1/4 of the original, which improves system coverage performance. limited.
  • the currently supported TBS scaling factors may not meet the coverage requirements.
  • TBS scaling schemes such as Msg4PDSCH are not supported for DCI 1_0 scheduled PDSCH using other RNTI scrambling CRCs. Therefore, the existing PDSCH TBS scaling solution needs to be enhanced to improve coverage performance.
  • Figure 6 is a schematic flowchart of a communication method provided by an embodiment of the present application. As shown in Figure 6, the method includes:
  • the terminal device receives a system information (SI), where the system information carries first indication information.
  • SI system information
  • the terminal equipment receives downlink control information DCI used for scheduling the physical downlink shared channel PDSCH.
  • the terminal equipment receives the PDSCH with a transport block size TBS scaled.
  • S601 may be replaced by: the terminal device receives a broadcast message, where the broadcast message carries the first indication information.
  • S601 may be replaced by: the terminal device receives the first indication information.
  • the first indication information may be a broadcast message, a multicast message or a unicast message.
  • the first indication information may be indication information sent by the network device to the terminal device when the terminal device and the network device are connected.
  • Figure 7 is a schematic flow chart of another communication method provided by an embodiment of the present application. As shown in Figure 7, the method includes:
  • the network device sends a system message, where the system message carries first indication information.
  • the network device sends downlink control information DCI for scheduling the physical downlink shared channel PDSCH; wherein the first indication information and/or the DCI are used for the terminal device to receive the PDSCH with a transport block size TBS scaled .
  • S701 may be replaced by: the network device sends a broadcast message, where the broadcast message carries the first indication information.
  • S701 may be replaced by: the network device sends the first indication information.
  • the first indication information may be a broadcast message, a multicast message or a unicast message.
  • the first indication information may be indication information sent by the network device to the terminal device when the terminal device and the network device are connected.
  • a Master Information Block (MIB) or a System Information Block (SIB) in the system message carries the first indication information.
  • the network device may send the TBS-scaled PDSCH according to the first indication information and/or the DCI.
  • the network device may perform TBS scaling on the PDSCH according to the first indication information and/or the DCI, and send the TBS-scaled PDSCH.
  • the terminal device receiving the system message may include: the terminal device receiving the system message sent by the network device.
  • the network device sends the system message, which may include: the network device sends/broadcasts the system message to the terminal device.
  • the first indication information may be display indication information or implicit indication information.
  • the first indication information includes one or more bits, the plurality of bits may be continuous or discontinuous or at least partially continuous, and the one or more bits are used for indication information.
  • the first indication information is implicit indication information, the first indication information corresponds to the target domain or target field in the system message, and the target domain or the target field is used to configure information related to the first indication information.
  • the first indication information may be the indication information in the agreement before this application, or the first indication information may be the indication information specified in the agreement after this application.
  • one or more reserved bits in the protocol before this application may be set as a target value, and the first indication information may be a target value.
  • the terminal device may receive the TBS-scaled PDSCH according to the first indication information.
  • the terminal device may receive the TBS-scaled PDSCH according to the DCI.
  • the terminal equipment may receive the TBS-scaled PDSCH according to the first indication information and the DCI.
  • the TBS-scaled PDSCH in any embodiment of the present application can be understood the same as the TBS-scaled PDSCH.
  • the terminal device receiving the TBS-scaled PDSCH may include: the terminal device determines the scaled TBS, and receives the TBS-scaled PDSCH according to the scaled TBS.
  • the method for the terminal device to determine the scaled TBS can be determined through the above steps (1) to (3).
  • the terminal device may receive the TBS-scaled PDSCH according to the scaling factor of one TBS among the one or more scaling factors of the TBS indicated by the first indication information.
  • the terminal equipment may receive the TBS-scaled PDSCH according to a scaling factor of one TBS among the one or more scaling factors of the TBS indicated by the DCI.
  • the terminal device may use the scaling factor of one TBS among the one or more scaling factors of TBS indicated by the first indication information and the scaling factor of one TBS among the one or more scaling factors of the TBS indicated by the DCI, The TBS scaled PDSCH is received.
  • the terminal device may perform the following steps when the first indication information is not used to indicate the scaling factor of one or more TBSs of the PDSCH, or when the first indication information indicates the scaling factors of one or more TBSs of the PDSCH.
  • the terminal device may be based on the target scaling factor agreed upon in the protocol, or the preconfigured target scaling factor, or Default target scaling factor for receiving TBS scaling of the PDSCH.
  • the terminal device may receive the TBS-scaled PDSCH according to the target scaling factor and the second scaling factor indicated by the DCI.
  • the target scaling factor may be a fourth scaling factor or an eighth scaling factor described below.
  • the terminal device receives a system message, wherein the system message carries first indication information; the terminal device receives downlink control information DCI used to schedule the physical downlink shared channel PDSCH; according to the first indication information and/or the DCI, the terminal device receives the PDSCH with a transport block size TBS scaled.
  • the terminal equipment can receive the TBS-scaled PDSCH with a transport block size according to the first indication information and/or the DCI, thereby being able to accurately receive the TBS-scaled PDSCH.
  • the first indication information is used to indicate scaling factors of one or more TBSs of the PDSCH. In other embodiments, the first indication information is not used to indicate scaling factors of one or more TBSs of the PDSCH.
  • the first indication information may be used to indicate a scaling factor of one TBS of the PDSCH.
  • the first indication information may be used to indicate scaling factors of multiple TBSs of the PDSCH.
  • the first indication information may carry the scaling factor of one TBS, or the first indication information may carry the scaling factors of multiple TBSs.
  • the first indication information may indicate: a scaling factor of a TBS in a set of TBS scaling factors pre-configured by the protocol/terminal device, or the first indication information may indicate: a TBS scaling pre-configured by the protocol/terminal device.
  • the set of TBS scaling factors may include at least one scaling factor of the TBS.
  • the set of TBS scaling factors may be a set agreed upon by a protocol before this application (ie, an existing agreement), or may be a set agreed upon by a protocol after this application (ie, a protocol after this application).
  • the scaling factors of the TBS in the set agreed upon by the agreement before this application are at least partially different from the scaling factors of the TBS in the set agreed upon by the agreement after this application.
  • the scaling factor of TBS may also be called: scaling factor, TBS scaling factor or scaling factor corresponding to TBS.
  • each of the one or more TBS scaling factors may be used for TBS scaling of the PDSCH.
  • the scaling factors of one or more TBSs indicated by the first indication information may be scaling factors of TBSs in the NTN system.
  • the scaling factors of one or more TBSs indicated by the first indication information may be scaling factors of TBSs in the NR system.
  • the scaling factors of one or more TBSs indicated by the first indication information may be stipulated by existing protocols (i.e., protocols before this application), or may be stipulated by future protocols (i.e., protocols after this application), Or, it can be configured by the network device, or it can be pre-configured by the terminal device.
  • the terminal device/network device may use or not use one of the one or more TBS scaling factors indicated by the first indication information according to the measurement value of the reference signal and/or whether the terminal device has the PDSCH capability of receiving TBS scaling.
  • Scaling factor for TBS when in use, the terminal device/network device can also determine which TBS among the scaling factors of one or more TBSs to use based on the measurement value of the reference signal and/or whether the terminal device has the PDSCH capability to receive TBS scaling. scaling factor.
  • the terminal device may not use any one of the TBS scaling factors among the one or more TBS scaling factors indicated by the first indication information. Further, optionally, the terminal equipment may use the TBS scaling factor in the existing protocol indicated by the DCI for scheduling the PDSCH.
  • the terminal device may use the scaling factor of one TBS among the scaling factors of one or more TBSs indicated by the first indication information.
  • the terminal equipment may also jointly use or may not use the TBS scaling factor in the existing protocol for scheduling the DCI indication of the PDSCH.
  • the scaling factor for receiving the TBS scaled PDSCH may be larger, and/or, in the case of lower channel quality, the scaling factor for receiving the TBS scaled PDSCH Can be smaller.
  • the terminal device uses the TBS scaling factor, which may include: the terminal device determines the scaled TBS based on the TBS scaling factor; optionally, it may further include: receiving the scaled TBS based on the scaled TBS. TBS scaled PDSCH.
  • the terminal device may use the scaling factors of the one or more TBSs indicated by other information.
  • the scaling factor of one TBS among the factors, or the terminal device can use the scaling factor of one TBS among the scaling factors of one or more TBSs agreed upon in the protocol or pre-configured.
  • other information may be sent by the network device to the terminal device.
  • other information and the first indication information are carried through different signaling.
  • other information may be unicast information, broadcast information or multicast information.
  • other information may be DCI used for scheduling PDSCH.
  • the first indication information is not used to indicate the scaling factors of one or more TBSs of the PDSCH, which may include: the first indication information does not carry the scaling factors of one or more TBSs, or the first indication information No indication: scaling factor of one TBS in the TBS scaling factor set pre-configured by the protocol/terminal device, or the first indication information does not indicate: scaling of multiple TBSs in the TBS scaling factor set pre-configured by the protocol/terminal device factor.
  • the first indication information may be any indication information in the system message.
  • the first indication information may be indication information in an existing protocol or indication information in a protocol after this application.
  • the first indication information is not used to indicate the scaling factor of one or more TBSs of the PDSCH, which can be understood as: the system message does not carry the scaling factors used to indicate the one or more TBSs of the PDSCH. Information.
  • the DCI includes a first TB scaling field, wherein the first TB scaling field is used to indicate scaling factors of one or more TBSs of the PDSCH.
  • the DCI includes a first TB scaling field, wherein the first TB scaling field is used to indicate an invalid value, and the invalid value is an invalid TBS scaling factor or is empty.
  • an invalid TBS scaling factor may indicate that the scaling factor cannot perform TBS scaling.
  • the scaling factor of an invalid TBS may be -1, 2, or other values, etc.
  • the DCI does not include the first TB scaling domain.
  • the terminal device receives the PDSCH with a transport block size TBS scaled, including:
  • the terminal equipment sends the second indication information;
  • the second indication information is used to request physical downlink TBS scaling of the transport block size of the shared channel PDSCH, or the second indication information is used to request a new TBS scaling factor;
  • the terminal device receives third indication information
  • the terminal equipment receives the TBS scaled PDSCH.
  • the network device receives the second indication information;
  • the second indication information is used to request the TBS scaling of the transport block size of the physical downlink shared channel PDSCH, or the second indication information is used to request New TBS scaling factor;
  • the network device sends third instruction information
  • the third indication information and/or the DCI are used for the terminal equipment to receive the PDSCH with a transport block size TBS scaled.
  • the terminal equipment receives the PDSCH with a transport block size TBS scaled, including: according to the first indication information, a reference signal At least one of the measured values and the terminal equipment has the ability to receive the TBS scaled PDSCH, and the terminal equipment sends the second indication information;
  • the second indication information corresponds to the scaling factors of one or more TBSs of the PDSCH indicated by the first indication information;
  • the second indication information corresponds to the scaling factor of one or more TBSs of the PDSCH that is agreed upon in the protocol or preconfigured; and/or,
  • the second indication information indicates scaling factors of one or more TBSs of the PDSCH corresponding to the DCI.
  • the terminal equipment may receive the TBS-scaled PDSCH according to the scaling factor corresponding to the second indication information. For example, if the second indication information corresponds to the scaling factors of one or more TBSs of the PDSCH indicated by the first indication information, the terminal equipment may use the scaling factors of one or more TBSs of the PDSCH indicated by the first indication information.
  • One of the TBS scaling factors is a TBS scaling factor, and the TBS scaled PDSCH is received.
  • the terminal device may indicate one of the scaling factors of the one or more TBSs of the PDSCH according to the first indication information, and the DCI indicates one of the scaling factors of the one or more TBSs of the PDSCH.
  • TBS scaling factor to receive the TBS scaled PDSCH.
  • the scaling factors of one or more TBSs agreed upon in the protocol or preconfigured may include the fourth scaling factor described below, or may include the second set including one or more scaling factors described below.
  • the terminal device indicates to the network device through the second indication information: use the third The scaling factor of one TBS among the scaling factors of one or more TBSs of the PDSCH indicated by an indication information, or in other words, the terminal device indicates to the network device through the second indication information: the PDSCH indicated by the first indication information.
  • the PDSCH scaled by the TBS is received based on one of the TBS scaling factors of one or more TBS scaling factors.
  • the terminal device indicates to the network device through the second indication information that the scaling factor is agreed upon by the protocol or preconfigured in advance.
  • the scaling factor of one TBS among the configured scaling factors of one or more TBSs of the PDSCH or in other words, the terminal device indicates to the network device through the second indication information: one or more of the PDSCHs configured according to the protocol agreement or in advance.
  • the PDSCH scaled by the TBS is received by a scaling factor of one TBS among the scaling factors of the TBS.
  • the terminal device indicates to the network device through the second indication information that DCI is used to indicate the scaling factors of one or more TBSs of the PDSCH.
  • the scaling factor of one TBS among the scaling factors or in other words, the terminal device indicates to the network device through the second indication information: According to the DCI indication of the scaling factor of one TBS among the one or more scaling factors of the TBS of the PDSCH, receive the TBS Scaled PDSCH.
  • the terminal device sends second indication information, which may include: when the first indication information is not used to indicate the scaling factor of one or more TBSs of the PDSCH , the terminal device sends the second instruction information.
  • the terminal device sends second indication information, which may include: the first indication information is used to indicate scaling factors of one or more TBSs of the PDSCH, and the If the terminal device cannot use one of the scaling factors of the one or more TBSs or the scaling factor of any TBS, the terminal device sends the second indication information.
  • the terminal device sends second indication information, which may include: the first indication information is used to indicate scaling factors of one or more TBSs of the PDSCH, and the If the scaling factors of one or more TBSs do not meet the requirements or do not include the scaling factors of the preset TBSs, the terminal device sends second indication information.
  • the terminal device sends the second indication information according to the measured value of the reference signal, which may include: when the measured value of the reference signal is less than or equal to the threshold value, the terminal device sends the second indication information.
  • the terminal equipment sends the second indication information.
  • the terminal device does not have the PDSCH capability of receiving TBS scaling, the terminal device does not send the second indication information.
  • the terminal device sending the second indication information includes: when the communication of the terminal device is NTN communication, the terminal device sends the second indication information. For example, in the case where the communication of the terminal equipment is NTN communication, the terminal determines at least one of the first indication information, the measurement value of the reference signal is less than or equal to the threshold value, and the terminal equipment has the ability to receive the TBS scaled PDSCH. 1. Send the second instruction information.
  • the reference signal may be a reference signal sent by the network device to the terminal device.
  • the reference signal may include at least one of the following: synchronization signal block (Synchronization Signal Block, SSB), channel state information reference signal (Channel State Information-Reference Signal, CSI-RS).
  • SSB can also be called synchronization signal/physical broadcast channel block (Synchronization Signal/Physical Broadcast Channel Block, SS/PBCH block).
  • the measurement value may include at least one of the following measurement parameter values: Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), Received Signal Strength Indication (Received Signal Strength Indicator) Strength Indicator (RSSI), Signal to Interference and Noise Ratio (SINR).
  • RSRP Reference Signal Received Power
  • RSSI Received Signal Strength Indication
  • SINR Signal to Interference and Noise Ratio
  • the threshold values corresponding to different measurement parameter values may be the same or different.
  • the threshold values corresponding to different reference signals may be the same or different.
  • the measurement value of the reference signal is less than or equal to the threshold value, which can indicate that the terminal equipment determines that the communication quality in the current coverage situation is poor, and the TBS scaling factor before this application indicated by the DCI used for scheduling PDSCH will cause The bit error rate is high, and the reliability of terminal equipment in receiving downlink information becomes low.
  • the terminal device may send second indication information to the network device, so that the network device sends third indication information to the terminal device to indicate scaling factors of one or more TBSs through the third indication information, and the scaling factors of one or more TBSs are
  • the TBS scaling factor specified in the protocol after this application, the scaling factor of one or more TBSs, is different from the TBS scaling factor before this application, so that the terminal device can use the bit error rate corresponding to the current communication quality as needed.
  • the terminal device may report the measured value of the reference signal to the network device, so that the network device may indicate to the terminal device the TBS scaling factor corresponding to the measured value of the reference signal.
  • the terminal device can report the communication quality level corresponding to the measurement value of the reference signal to the network device, so that the network device can indicate the TBS scaling factor corresponding to the communication quality level to the terminal device.
  • the terminal device may receive the PDSCH with a TBS-scaled transport block size.
  • the third indication information may be included in the message during the random access process.
  • the third indication information may be included in a random access response (Random Access Response, RAR) or msg2.
  • RAR Random Access Response
  • the third indication information may be included in the msg4 message, or may be included in the msgB message.
  • the third indication information may be included in a Radio Resource Control (Radio Resource Control, RRC) message, Downlink Control Information (DCI) or Medium Access Control Control Element (MAC CE) middle.
  • RRC Radio Resource Control
  • DCI Downlink Control Information
  • MAC CE Medium Access Control Control Element
  • the third indication information may be used to indicate the scaling factor of one or more TBSs of the PDSCH, or the third indication information may not be used to indicate the scaling factors of one or more TBSs of the PDSCH.
  • the terminal equipment may receive the TBS-scaled PDSCH according to the scaling factor of one TBS among the one or more scaling factors of the TBS indicated by the third indication information.
  • the terminal equipment may receive the TBS-scaled PDSCH according to a scaling factor of one TBS among the one or more scaling factors of the TBS indicated by the DCI.
  • the terminal device may use the scaling factor of one TBS among the one or more scaling factors of TBS indicated by the third indication information and the scaling factor of one TBS among the one or more scaling factors of the TBS indicated by the DCI, The TBS scaled PDSCH is received.
  • the terminal device may indicate the scaling factor of one or more TBSs of the PDSCH when the third indication information is not used to indicate the scaling factor of one or more TBSs of the PDSCH, or when the third indication information indicates the scaling factors of one or more TBSs of the PDSCH.
  • the terminal device may use the target scaling factor agreed upon in the protocol or the preconfigured target scaling factor, Or the default target scaling factor to receive the TBS scaled PDSCH.
  • the terminal device may receive the TBS-scaled PDSCH according to the target scaling factor and the second scaling factor indicated by the DCI.
  • the target scaling factor may be a fourth scaling factor or an eighth scaling factor described below.
  • the terminal equipment receives the TBS scaled PDSCH, including: the first scaling factor indicated by the terminal equipment according to the first indication information or the third indication information. , receiving the TBS scaled PDSCH.
  • the first indication information or the third indication information indicates a first scaling factor; the first scaling factor is used for the terminal device to receive the TBS-scaled PDSCH.
  • the first indication information or the third indication information may include the first TBS scaling factor.
  • the first indication information or the third indication information may include a target field or one or more bits, and the target field or one or more bits are used to indicate the first TBS scaling factor among the one or more TBS scaling factors.
  • the scaling factor of one or more TBSs where the first TBS scaling factor indicated by the first indication information or the third indication information may be at least one of the following: one or more TBSs specified in the previous agreement of this application.
  • the scaling factor the scaling factor of one or more TBSs specified in the protocol after this application, the scaling factors of one or more TBSs included in the first indication information or the third indication information, the scaling factors of one or more TBSs preconfigured by the terminal device scaling factor.
  • the terminal device receiving the TBS-scaled PDSCH according to the DCI includes: the terminal device receiving the TBS-scaled PDSCH according to a second scaling factor indicated by the DCI.
  • the DCI indicates a second scaling factor; the second scaling factor is used for the terminal device to receive the TBS-scaled PDSCH.
  • the DCI may include at least one of the following: a first TB scaling domain, an MCS domain, a reserved bit, and a second TB scaling domain.
  • the second scaling factor indicated by the DCI may be the second scaling factor indicated by at least one of the following in the DCI: the first TB scaling domain, the MCS domain, the reserved bits, and the second TB scaling domain.
  • the scaling factors of one or more TBSs where the second scaling factor indicated by the DCI is located may be at least one of the following: the scaling factors of one or more TBSs stipulated in the agreement before this application, the scaling factors stipulated in the agreement after this application.
  • the terminal device receiving the TBS-scaled PDSCH according to the first indication information and/or the DCI includes: the terminal device receiving the TBS-scaled PDSCH according to the first indication information or the third indication information.
  • the first scaling factor indicated by the indication information, and the second scaling factor indicated by the DCI receive the TBS scaled PDSCH.
  • the first indication information or the third indication information indicates the first scaling factor
  • the DCI carries the second scaling factor
  • the PDSCH is used for the terminal equipment to receive TBS scaling.
  • the second TBS scaling factor may be indicated by the first TB scaling field in the DCI for scheduling PDSCH.
  • the second TBS scaling factor may be indicated through other indication fields in the DCI for scheduling PDSCH.
  • the second TBS scaling factor may be included in at least one of the following: scaling factors of one or more TBSs stipulated in the agreement before this application, scaling factors of one or more TBSs stipulated in the agreement after this application, the first The scaling factors of one or more TBSs indicated by the indication information or the third indication information are the scaling factors of one or more TBSs preconfigured by the terminal device.
  • the second TBS scaling factor may be included in the scaling factors of one or more TBSs specified in protocols prior to this application.
  • indication fields in any embodiment of the present application may be: other existing indication fields or newly added/newly defined indication fields using reserved bits.
  • the existing other indication fields may be the MCS fields described below, or the existing other indication fields may be one or more reserved bits described below.
  • the one or more reserved bits can be used to define a new/newly defined indication field.
  • the newly added/newly defined indication field may be the second TB scaling field described below.
  • the third TBS scaling factor may be smaller than the first TBS scaling factor, or the third TBS scaling factor may be larger than the first TBS scaling factor.
  • the third TBS scaling factor may be smaller than the second TBS scaling factor, or the third TBS scaling factor may be larger than the second TBS scaling factor.
  • the terminal equipment receives the TBS-scaled PDSCH according to the first scaling factor indicated by the first indication information or the third indication information, and the second scaling factor indicated by the DCI, including: The terminal device determines a third scaling factor based on the product of the first scaling factor indicated by the first indication information or the third indication information and the second scaling factor indicated by the DCI; the terminal device determines the third scaling factor based on the first scaling factor indicated by the DCI.
  • the third TBS scaling factor is determined based on the product of the first TBS scaling factor and the second TBS scaling factor.
  • the third TBS scaling factor is the product of the first TBS scaling factor and the second TBS scaling factor.
  • Other ways of determining the third TBS scaling factor are described below:
  • the third TBS scaling factor is determined based on the sum of the first TBS scaling factor and the second TBS scaling factor.
  • the third TBS scaling factor is the sum of the first TBS scaling factor and the second TBS scaling factor.
  • the third TBS scaling factor is determined based on the absolute value of the difference between the first TBS scaling factor and the second TBS scaling factor.
  • the third TBS scaling factor is the absolute value of the difference between the first TBS scaling factor and the second TBS scaling factor.
  • the third TBS scaling factor is determined based on the smaller TBS scaling factor divided by the larger TBS scaling factor among the first TBS scaling factor and the second TBS scaling factor. of.
  • the third TBS scaling factor is the result of dividing the smaller TBS scaling factor by the larger TBS scaling factor among the first TBS scaling factor and the second TBS scaling factor.
  • the third TBS scaling factor is the greater of the first TBS scaling factor and the second TBS scaling factor.
  • the third TBS scaling factor is the smaller of the first TBS scaling factor and the second TBS scaling factor.
  • the terminal device receiving the TBS-scaled PDSCH includes: the terminal device receiving the TBS-scaled PDSCH according to a fourth scaling factor; wherein the fourth scaling factor is a value range is a positive number greater than 0 and less than or equal to 1.
  • the first indication information and/or the DCI are used for the terminal device to receive the TBS-scaled PDSCH according to the fourth scaling factor; wherein, the fourth scaling factor is a positive number whose value range is greater than 0 and less than or equal to 1.
  • the scaling factor of the TBS indicated by the terminal device in the first indication information and/or the DCI does not meet the requirements, or the first indication information does not indicate the scaling factors of one or more TBSs, or the DCI includes
  • the first TB scaling field is used to indicate an invalid value, or if the DCI does not include the first TB scaling domain, the terminal device receives the TBS-scaled PDSCH according to the fourth scaling factor.
  • the fourth TBS scaling factor is agreed upon in a protocol, or the fourth TBS scaling factor is determined by the terminal device according to preconfiguration, or the fourth TBS scaling factor is a default value.
  • the terminal equipment receives the TBS-scaled PDSCH according to the fourth scaling factor.
  • the value of the fourth TBS scaling factor may be the same as or different from the value of the first TBS scaling factor.
  • the value of the fourth TBS scaling factor may be different or the same as the value of the second TBS scaling factor.
  • the terminal device receives the TBS-scaled PDSCH according to a fourth scaling factor, including:
  • the terminal device determines a fifth scaling factor based on the fourth scaling factor and the second scaling factor indicated by the DCI;
  • the terminal equipment receives the TBS-scaled PDSCH according to the fifth scaling factor.
  • the first indication information and/or the DCI are used for the terminal device to receive TBS scaled data according to the fourth scaling factor and the second scaling factor indicated by the DCI.
  • the PDSCH is used for the network device side.
  • the scaling factor of the TBS indicated by the terminal device in the first indication information and/or the DCI does not meet the requirements, or the first indication information does not indicate the scaling factors of one or more TBSs, or the DCI includes
  • the first TB scaling field is used to indicate an invalid value, or if the DCI does not include the first TB scaling domain, the terminal device receives the TBS-scaled PDSCH according to the fifth scaling factor.
  • the terminal equipment receives the TBS-scaled PDSCH according to the fifth scaling factor.
  • the fifth TBS scaling factor may be smaller than the fourth TBS scaling factor, or the fifth TBS scaling factor may be larger than the fourth TBS scaling factor.
  • the fifth TBS scaling factor may be smaller than the second TBS scaling factor, or the fifth TBS scaling factor may be larger than the second TBS scaling factor.
  • the terminal device determines a fifth scaling factor based on the fourth scaling factor and the second scaling factor indicated by the DCI, including: the terminal device determines a fifth scaling factor based on the fourth scaling factor and the second scaling factor indicated by the DCI.
  • the product of the second scaling factors indicated by the DCI determines the fifth scaling factor.
  • the fifth TBS scaling factor is determined based on the product of the fourth TBS scaling factor and the second TBS scaling factor.
  • the fifth TBS scaling factor is the product of the fourth TBS scaling factor and the second TBS scaling factor.
  • Other ways of determining the fifth TBS scaling factor are described below:
  • the fifth TBS scaling factor is determined based on the sum of the fourth TBS scaling factor and the second TBS scaling factor.
  • the fifth TBS scaling factor is the sum of the fourth TBS scaling factor and the second TBS scaling factor.
  • the fifth TBS scaling factor is determined based on the absolute value of the difference between the fourth TBS scaling factor and the second TBS scaling factor.
  • the fifth TBS scaling factor is the absolute value of the difference between the fourth TBS scaling factor and the second TBS scaling factor.
  • the fifth TBS scaling factor is determined based on the result of dividing the smaller TBS scaling factor by the larger TBS scaling factor among the fourth TBS scaling factor and the second TBS scaling factor. of.
  • the fifth TBS scaling factor is the result of dividing the smaller TBS scaling factor by the larger TBS scaling factor among the fourth TBS scaling factor and the second TBS scaling factor.
  • the fifth TBS scaling factor is the greater of the fourth TBS scaling factor and the second TBS scaling factor.
  • the fifth TBS scaling factor is the smaller of the fourth TBS scaling factor and the second TBS scaling factor.
  • the terminal device receives the TBS scaled PDSCH, including:
  • the terminal device determines a sixth scaling factor according to a first set including one or more scaling factors indicated by the first indication information or the third indication information;
  • the terminal equipment receives the TBS-scaled PDSCH according to the sixth scaling factor.
  • the first indication information or the third indication information indicates a first set including one or more scaling factors; the first set is used for the terminal device to determine the sixth scaling factor, The TBS scaled PDSCH is received according to the sixth scaling factor.
  • the sixth TBS scaling factor according to which the terminal equipment receives the TBS-scaled PDSCH is one or more TBSs in the first set indicated by the network equipment through the first indication information or the third indication information. determined by the scaling factor.
  • the first set may include scaling factors for one TBS, or the first set may include scaling factors for multiple TBSs.
  • the first indication information may include scaling factors of multiple TBSs in the first set.
  • the first indication information may include TBS scaling factors of 1, 0.5, 0.125, etc.
  • the first set may include scaling factor indication information of one or more TBSs in the first set, so that the terminal device can determine the corresponding scaling factor based on the scaling factor indication information of one or more TBSs.
  • Scaling factor for one or more TBS For example, the protocol may agree on the scaling factor of at least one TBS, or the terminal device may pre-configure the scaling factor of at least one TBS.
  • the terminal device may determine the scaling factor from the scaling factor of at least one TBS based on the scaling factor indication information of one or more TBSs.
  • the corresponding scaling factor of one or more TBS For example, the scaling factor of at least one TBS includes 1, 0.5, and 0.125.
  • the terminal device determines that the scaling factors of the corresponding multiple TBSs are 1 respectively. , 0.5 and 0.125.
  • the scaling factor of at least one TBS includes 1, 0.5, and 0.125.
  • the scaling factor indication information of multiple TBSs is 10 since the indication information less than or equal to 10 is 00, 01, and 10, the terminal device The scaling factors of the corresponding multiple TBSs are determined to be 1, 0.5 and 0.125 respectively.
  • the terminal device may determine the sixth TBS scaling factor from the scaling factors of one or more TBSs in the first set according to protocol agreement, preconfiguration, or instructions from the network device.
  • the terminal device may perform the scaling according to the indication of the first TB scaling domain in the DCI for scheduling PDSCH. , determine the sixth TBS scaling factor from the scaling factors of the plurality of TBSs included in the first set.
  • the terminal equipment may use the indication of other indication fields in the DCI for scheduling the PDSCH to determine the sixth TBS scaling factor from the A sixth TBS scaling factor is determined from the scaling factors of a plurality of TBSs included in a set.
  • the terminal equipment receiving the TBS-scaled PDSCH according to the sixth scaling factor includes: the terminal equipment according to the sixth scaling factor and the second scaling factor indicated by the DCI, Determine a seventh scaling factor; the terminal equipment receives the TBS-scaled PDSCH according to the seventh scaling factor.
  • the first set is used by the terminal device to determine the sixth scaling factor, and according to the sixth scaling factor and the second scaling factor indicated by the DCI, the TBS scaled The PDSCH.
  • the seventh TBS scaling factor may be smaller than the sixth TBS scaling factor, or the seventh TBS scaling factor may be larger than the sixth TBS scaling factor.
  • the seventh TBS scaling factor may be smaller than the second TBS scaling factor, or the seventh TBS scaling factor may be larger than the second TBS scaling factor.
  • the terminal device determines a seventh scaling factor based on the sixth scaling factor and the second scaling factor indicated by the DCI, including: the terminal device determines a seventh scaling factor based on the sixth scaling factor and the DCI indication.
  • the product of the second scaling factors determines the seventh scaling factor.
  • the first set is used by the terminal device to determine the sixth scaling factor, and the TBS is received according to the product of the sixth scaling factor and the second scaling factor indicated by the DCI. Scaled PDSCH.
  • the seventh TBS scaling factor is determined based on the product of the sixth TBS scaling factor and the second TBS scaling factor.
  • the seventh TBS scaling factor is the product of the sixth TBS scaling factor and the second TBS scaling factor.
  • the seventh TBS scaling factor is determined based on the sum of the sixth TBS scaling factor and the second TBS scaling factor.
  • the seventh TBS scaling factor is the sum of the sixth TBS scaling factor and the second TBS scaling factor.
  • the seventh TBS scaling factor is determined based on the absolute value of the difference between the sixth TBS scaling factor and the second TBS scaling factor.
  • the seventh TBS scaling factor is the absolute value of the difference between the sixth TBS scaling factor and the second TBS scaling factor.
  • the seventh TBS scaling factor is determined based on the result of dividing the smaller TBS scaling factor by the larger TBS scaling factor among the sixth TBS scaling factor and the second TBS scaling factor.
  • the seventh TBS scaling factor is the result of dividing the smaller TBS scaling factor by the larger TBS scaling factor among the sixth TBS scaling factor and the second TBS scaling factor.
  • the seventh TBS scaling factor is a larger TBS scaling factor among the sixth TBS scaling factor and the second TBS scaling factor.
  • the seventh TBS scaling factor is a smaller TBS scaling factor among the sixth TBS scaling factor and the second TBS scaling factor.
  • both the sixth TBS scaling factor and the second TBS scaling factor may be indicated by the DCI used for scheduling PDSCH.
  • the indication of the DCI for scheduling PDSCH is 00
  • the sixth TBS scaling factor is the first TBS scaling factor among the scaling factors of one or more TBSs included in the first set
  • the second TBS scaling factor is The factor is the first TBS scaling factor among multiple TBS scaling factors specified by the existing protocol.
  • the terminal device receiving the PDSCH with transport block size TBS scaling includes: the terminal device determines an eighth scaling factor according to a second set including one or more scaling factors, wherein, The second set is stipulated in the protocol, or the second set is determined by the terminal device according to the preconfiguration, or the second set is a default value set; the terminal device receives according to the eighth scaling factor. TBS scaled PDSCH.
  • the first indication information and/or the DCI are used by the terminal device to determine the eighth scaling factor according to the second set including one or more scaling factors.
  • the eighth scaling factor is to receive the PDSCH scaled by TBS; wherein the second set is agreed upon by the protocol, or the second set is determined by the terminal equipment according to the preconfiguration, or the second set is missing Trust value collection.
  • the scaling factor of the TBS indicated by the terminal device in the first indication information and/or the DCI does not meet the requirements, or the first indication information does not indicate the scaling factors of one or more TBSs, or the DCI includes
  • the first TB scaling domain is used to indicate an invalid value, or if the DCI does not include the first TB scaling domain, the terminal device determines the eighth scaling factor according to the second set including one or more scaling factors. , and then the terminal equipment receives the TBS-scaled PDSCH according to the eighth scaling factor.
  • the terminal equipment will ignore the DCI indication for scheduling PDSCH.
  • the second TBS scaling factor can be indicated, the terminal device determines an eighth scaling factor according to a second set including one or more scaling factors, and then the terminal device receives the TBS-scaled PDSCH according to the eighth scaling factor.
  • the eighth TBS scaling factor used by the terminal device may not be determined according to instructions from the network device, but based on the scaling factors of one or more TBSs in the second set agreed upon in the protocol or preconfigured.
  • the second set including one or more scaling factors may be indicated by the network device to the terminal device.
  • the second set may include scaling factors for one or more TBSs.
  • the first indication information or the third indication information may include a second set, and the TBS scaling factors in the second set are 1, 0.5, and 0.125 respectively.
  • the first indication information or the third indication information includes TBS scaling factor indication information, and the TBS scaling factor indication information includes 00, 01, and 10.
  • the terminal device determines the TBS scaling factors in the second set according to the TBS scaling factor indication information. are 1, 0.5 and 0.125.
  • the terminal device may determine the eighth scaling factor from the scaling factors of the plurality of TBSs included in the second set according to the indication of the first TB scaling domain in the DCI for scheduling the PDSCH. TBS scaling factor. In other embodiments, the terminal device may determine the eighth TBS scaling factor from the scaling factors of multiple TBSs included in the second set according to the indication of other indication fields in the DCI used to schedule the PDSCH. .
  • the terminal device receives the TBS-scaled PDSCH according to the eighth scaling factor, including:
  • the terminal device determines a ninth scaling factor based on the eighth scaling factor and the second scaling factor indicated by the DCI;
  • the terminal equipment receives the TBS-scaled PDSCH according to the ninth scaling factor.
  • the first indication information and/or the DCI are used by the terminal device to determine the eighth scaling factor according to the second set including one or more scaling factors.
  • the eighth scaling factor and the second scaling factor indicated by the DCI receive the TBS scaled PDSCH.
  • the terminal device determines a ninth scaling factor based on the eighth scaling factor and the second scaling factor indicated by the DCI, including: the terminal device determines a ninth scaling factor based on the eighth scaling factor and the second scaling factor indicated by the DCI.
  • the product of the second scaling factors indicated by the DCI determines the ninth scaling factor.
  • the ninth TBS scaling factor is determined based on the product of the eighth TBS scaling factor and the second TBS scaling factor.
  • the ninth TBS scaling factor is the product of the eighth TBS scaling factor and the second TBS scaling factor.
  • Other ways of determining the ninth TBS scaling factor are described below:
  • the ninth TBS scaling factor is determined based on the sum of the eighth TBS scaling factor and the second TBS scaling factor.
  • the ninth TBS scaling factor is the sum of the eighth TBS scaling factor and the second TBS scaling factor.
  • the ninth TBS scaling factor is determined based on the absolute value of the difference between the eighth TBS scaling factor and the second TBS scaling factor.
  • the ninth TBS scaling factor is the absolute value of the difference between the eighth TBS scaling factor and the second TBS scaling factor.
  • the ninth TBS scaling factor is determined based on a result of dividing the smaller TBS scaling factor by the larger TBS scaling factor among the eighth TBS scaling factor and the second TBS scaling factor.
  • the ninth TBS scaling factor is the result of dividing the smaller TBS scaling factor by the larger TBS scaling factor among the eighth TBS scaling factor and the second TBS scaling factor.
  • the ninth TBS scaling factor is a larger TBS scaling factor among the eighth TBS scaling factor and the second TBS scaling factor.
  • the ninth TBS scaling factor is a smaller TBS scaling factor among the eighth TBS scaling factor and the second TBS scaling factor.
  • both the eighth TBS scaling factor and the second TBS scaling factor may be the DCI used for scheduling PDSCH (for example, the first TB scaling domain or other indication domain in the DCI used for scheduling PDSCH) indicated.
  • the indication of the DCI used for scheduling PDSCH is 10
  • the eighth TBS scaling factor is the second TBS scaling factor among the scaling factors of multiple TBSs included in the second set
  • the second TBS scaling factor is The second TBS scaling factor among multiple TBS scaling factors specified by existing protocols.
  • the terminal device when the terminal device uses a certain TBS scaling factor indicated by the first indication information, the terminal device can send feedback information to the network device, and/or, when the terminal device does not use In the case where the first indication information indicates the scaling factor of any TBS, the terminal device may not send feedback information to the network device.
  • the terminal device when the terminal device uses the scaling factor of a certain TBS indicated by the first indication information, the terminal device may not send feedback information to the network device, and/or, when the terminal device does not use the first In the case of indicating the scaling factor of any TBS of the information, the terminal device may send feedback information to the network device.
  • the feedback information may or may not include the TBS scaling factor used by the terminal device.
  • the terminal device uses the scaling factor of one of the one or more TBSs indicated by the first indication information, or the terminal device does not use the scaling factors of one or more TBSs indicated by the first indication information.
  • Any TBS scaling factor in the network device sends or does not send feedback information to the network device, so that the network device can send the PDSCH corresponding to the corresponding TBS scaling factor to different terminal devices according to the TBS scaling factors used by different terminal devices.
  • the terminal device may use the TBS scaling factor specified in the previous agreement of this application. This will not be described in detail in the application examples.
  • the terminal equipment may obtain the scaling factors of one or more TBSs indicated by the first indication information, and may obtain the scaling factors of one or more TBSs indicated by the DCI for scheduling the PDSCH. .
  • the terminal equipment may use the scaling factor of a certain TBS among the scaling factors of one or more TBSs indicated by the first indication information, and optionally, do not use one of the DCI indications for scheduling PDSCH. or the scaling factor of any one of multiple TBS scaling factors.
  • the terminal equipment may use the scaling factor of one of the one or more TBSs indicated by the DCI for scheduling the PDSCH.
  • the terminal equipment may not use the scaling factor indicated by the first indication information.
  • the terminal device may determine the scaling factor A of one TBS (ie, the above-mentioned sixth TBS scaling factor) from the scaling factors of one or more TBSs indicated by the first indication information.
  • the scaling factor B of one TBS (that is, the second TBS scaling factor mentioned above) is determined among the scaling factors of one or more TBSs indicated by the DCI of the PDSCH. Based on the TBS scaling factor A and the TBS scaling factor B, the scaling factor used by the terminal device is determined.
  • C i.e. the seventh TBS scaling factor mentioned above).
  • the first indication information may indicate scaling factors of one or more TBSs.
  • the DCI used for scheduling PDSCH does not indicate scaling factors of one or more TBSs. In this way, the terminal device can obtain the scaling factors of one or more TBSs indicated by the first indication information, so that the terminal device can use the scaling factor of a certain TBS among the one or more scaling factors of TBSs indicated by the first indication information.
  • the absence of information other than the DCI used to schedule the PDSCH may indicate scaling factors for one or more TBSs.
  • the terminal equipment can obtain the scaling factors of one or more TBSs indicated by the DCI for scheduling the PDSCH, so that the terminal equipment can use one of the scaling factors of the one or more TBSs indicated by the DCI for scheduling the PDSCH.
  • Scaling factor for a certain TBS may indicate scaling factors for one or more TBSs.
  • the sixth TBS scaling factor is determined according to the DCI indication for scheduling PDSCH. In some embodiments, the eighth TBS scaling factor is determined according to the DCI indication used for scheduling PDSCH.
  • the terminal device since the first indication information indicates a first set including scaling factors of multiple TBSs, the terminal device does not know which TBS scaling factor to determine as the scaling factor from the scaling factors of multiple TBSs in the first set.
  • the sixth TBS scaling factor is such that through the indication of the DCI for scheduling the PDSCH, the terminal device can determine the sixth TBS scaling factor from scaling factors of multiple TBSs in the first set.
  • the terminal device since the second set predetermined by the protocol or preconfigured by the terminal device includes the scaling factors of multiple TBSs, the terminal device does not know which TBS to determine from the scaling factors of the multiple TBSs in the second set.
  • the scaling factor serves as the eighth TBS scaling factor, so that through the indication of the DCI for scheduling the PDSCH, the terminal device can determine the eighth TBS scaling factor from the scaling factors of multiple TBSs in the second set.
  • the sixth TBS scaling factor is determined according to the first TB scaling domain indication in the DCI used for scheduling PDSCH.
  • the eighth TBS scaling factor is determined according to the first TB scaling domain indication in the DCI used for scheduling PDSCH.
  • the terminal device may determine the sixth scaling domain according to the value indicated by the first TB scaling domain in the DCI for scheduling the PDSCH.
  • TBS scaling factor and/or eighth TBS scaling factor are examples of TBS scaling factor and/or eighth TBS scaling factor.
  • the first TBS scaling factor among the scaling factors of the plurality of TBSs in the first set is determined to be the sixth TBS scaling factor.
  • the second TBS scaling factor among the scaling factors of the plurality of TBSs in the first set is determined to be the sixth TBS scaling factor.
  • the first TBS scaling factor among the scaling factors of the plurality of TBSs in the second set is determined to be the eighth TBS scaling factor.
  • the second TBS scaling factor among the scaling factors of the plurality of TBSs in the second set is determined to be the eighth TBS scaling factor.
  • the first TB scaling domain in the DCI used for scheduling PDSCH may be the TB scaling domain agreed in the previous protocol (existing protocol) of this application.
  • the sixth TBS scaling factor is determined according to the modulation coding scheme (Modulation Coding Scheme, MCS) field indication in the DCI used for scheduling PDSCH.
  • the eighth TBS scaling factor is determined according to the modulation coding scheme MCS domain indication in the DCI used to schedule the PDSCH.
  • the terminal device may adjust the MCS domain according to the modulation coding scheme in the DCI for scheduling PDSCH.
  • the indicated value determines the sixth TBS scaling factor and/or the eighth TBS scaling factor.
  • the DCI used for scheduling PDSCH is scrambled by at least one of the following: Cell Radio Network Temporary Identity C-RNTI, Configuration Scheduling Radio Network Temporary Identity CS-RNTI, Modulation
  • the terminal device can be based on the DCI for scheduling PDSCH.
  • the value indicated by the Modulation Coding Scheme MCS field determines the sixth TBS scaling factor and/or the eighth TBS scaling factor.
  • the MCS field includes a first bit and a second bit; the first bit is used to indicate the sixth TBS scaling factor and/or the eighth TBS scaling factor, and the The second bit is used to indicate the MCS corresponding to the PDSCH.
  • the first bit may be one bit or multiple bits.
  • the multiple bits may be consecutive bits.
  • the second bit may be one bit or multiple bits.
  • the multiple bits may be consecutive bits.
  • the first bit and the second bit may be adjacent bits, or the first bit and the second bit may be non-adjacent bits (i.e., the first bit and the second bit may be adjacent bits).
  • Bits can be separated by at least one bit).
  • the number of the highest bit in the first bit is N
  • the number of the lowest bit in the second bit is N+1.
  • the number of the highest bit in the first bit is N
  • the number of the lowest bit in the second bit is N+M
  • M is an integer greater than or equal to 2.
  • at least one bit spaced between the first bit and the second bit may be a reserved bit, or may be a bit used to indicate other information (ie, a valid bit), or part of it may be a reserved bit. , the other part is the bits used to indicate other information.
  • the first bit and/or the second bit may be valid bits.
  • the first bit may be one valid bit or multiple valid bits.
  • the plurality of valid bits may be consecutive valid bits.
  • the second bit may be one valid bit or multiple valid bits.
  • the multiple valid bits may be consecutive valid bits.
  • the first bit and the second bit do not overlap.
  • the first bit is the first and second valid bit in the MCS field, then the second bit cannot be the MCS.
  • the first bit and the second bit may overlap.
  • the first bit and the second bit may overlap by at least one bit (eg, 1 bit or 2 bits, etc.).
  • the first bit is the Most Significant Bit (MSB) of the first number of bits
  • the second bit is the Least Significant Bit (LSB) of the second number of bits.
  • the first bit is the least significant bit of a first number of bits
  • the second bit is the most significant bit of a second number of bits.
  • the first number may be a number capable of indicating a TBS scaling factor.
  • the first number may be the same as or different from the number specified in previous protocols of this application for indicating the TBS scaling factor.
  • the first number may be 1, 2, 3, 4 or 5, etc.
  • the second number may be 1, 2, 3, 4 or 5, etc.
  • the first bit is a 2-bit most significant bit (MSB), and the second bit is a 3-bit least significant bit (LSB). In other embodiments, the first bit is the least significant bit of 2 bits, and the second bit is the most significant bit of 3 bits.
  • the MCS field may include 5 valid bits.
  • the terminal equipment obtains an MCS index set, and the second bit is used to indicate the MCS corresponding to the PDSCH in the MCS index set.
  • the terminal device obtains the MCS index set, which may include: the terminal device receives the MCS index set.
  • the method further includes: the terminal device determines an MCS index set according to preconfiguration.
  • the method further includes: the network device sends an MCS index set; the second bit is used to indicate the MCS corresponding to the PDSCH in the MCS index set.
  • the MCS index set in this embodiment of the present application may be an MCS index set that can be indicated by the second bit in the MCS field.
  • the second bit in the MCS field is three valid bits, and the set of MCS indexes that the second bit can indicate includes 8 MCS indexes.
  • the sixth TBS scaling factor is determined based on one or more reserved bit indications in the DCI for scheduling PDSCH.
  • one or more reserved bits in the DCI for scheduling PDSCH are configured as a second TB scaling domain, and the sixth TBS scaling factor is indicated according to the second TB scaling domain. definite.
  • the eighth TBS scaling factor is determined according to one or more reserved bit indications in the DCI used for scheduling PDSCH.
  • one or more reserved bits in the DCI for scheduling PDSCH are configured as the second TB scaling domain, and the eighth TBS scaling factor is determined according to the second TB scaling domain indication. of.
  • the terminal device in the case where the first TB scaling domain does not exist in the DCI for scheduling PDSCH, the terminal device may be configured according to one or more predetermined values in the DCI for scheduling PDSCH.
  • the value indicated by the left bit determines the sixth TBS scaling factor and/or the eighth TBS scaling factor.
  • the DCI used for scheduling PDSCH is scrambled by at least one of the following: Cell Radio Network Temporary Identity C-RNTI, Configuration Scheduling Radio Network Temporary Identity CS-RNTI, Modulation
  • the terminal device can be based on the DCI for scheduling PDSCH.
  • the value indicated by one or more reserved bits determines the sixth TBS scaling factor and/or the eighth TBS scaling factor.
  • all reserved bits in the DCI used for scheduling PDSCH may be at least one reserved bit, and one or more reserved bits may be determined from at least one reserved bit.
  • one or more reserved bits may be 1 bit, 2 bits, 3 bits, 4 bits, etc.
  • one or more reserved bits in the embodiment of this application may be 2 bits.
  • the 2 bits may be the 2 bits corresponding to the highest bit and the second highest bit among all the reserved bits in the DCI used for scheduling the PDSCH, or may be the lowest bit and the second bit.
  • the 2 bits may be 2 consecutive reserved bits among all the reserved bits in the DCI used for scheduling the PDSCH, or may be among all the reserved bits in the DCI used for scheduling the PDSCH. 2 non-consecutive bits.
  • all reserved bits in the DCI used for scheduling PDSCH may include a downlink assignment index (Downlink Assignment Index, DAI) field.
  • DAI Downlink Assignment Index
  • the one or more reserved bits may be determined from all reserved bits in the DAI field.
  • all reserved bits in the DAI field may be at least one bit.
  • all reserved bits in the DAI field may be 1 bit, 2 bits, 3 bits or 4 bits, etc.
  • all reserved bits in the DAI field may be 2 bits.
  • the DAI field in DCI/DCI 1_0 of the TC-RNTI scrambled CRC is a reserved bit.
  • all reserved bits in the DCI used for scheduling PDSCH may include other reserved bits outside the DAI domain.
  • the one or more reserved bits may be determined from other reserved bits.
  • other reserved bits may be at least one bit.
  • other reserved bits may be 1 bit, 2 bits, 3 bits or 4 bits, etc.
  • the 2 bits may be the 2 bits corresponding to the highest bit and the second highest bit among other reserved bits.
  • the second TB scaling domain may be one or more reserved bits determined in any of the above embodiments.
  • the second TB scaling domain may be: one or more reserved bits among all reserved bits in the DCI used for scheduling PDSCH.
  • the second TB scaling domain may be: one or more reserved bits among the reserved bits in the DAI domain in the DCI used for scheduling PDSCH.
  • the second TB scaling domain may be: one or more reserved bits among other reserved bits other than the DAI domain in the DCI used for scheduling PDSCH.
  • one or more reserved bits in the DCI 1_0 of the TC-RNTI scrambled CRC can be used to indicate the sixth TBS scaling factor and/or the eighth TBS scaling factor; optionally, the DAI field in DCI 1_0 of the TC-RNTI scrambling CRC can be used to indicate the sixth TBS scaling factor and/or the eighth TBS scaling factor; optionally, the TC-RNTI scrambling CRC In DCI 1_0, one or more reserved bits among other reserved bits except the DAI field may be used to indicate the sixth TBS scaling factor and/or the eighth TBS scaling factor.
  • One or more reserved bits among other reserved bits except the DAI domain may be configured as the second TB scaling domain.
  • 2 reserved bits included in the downlink allocation index DAI field may be used, and the sixth TBS scaling factor or the eighth TBS scaling factor may be indicated by the 2 reserved bits.
  • the downlink allocation index DAI field may include 2 reserved bits or more than 2 reserved bits.
  • the downlink allocation index DAI field may be configured as the second TB scaling field.
  • the two reserved bits in the downlink allocation index DAI field may be configured as the second TB scaling field.
  • two reserved bits can be determined from the more than two reserved bits, so that the fields corresponding to the two reserved bits are configured as the first Two terabyte scaling domain.
  • the second TB scaling domain may be a TB scaling domain specified in the protocol following this application (a solution proposed by this application compared to the existing protocol).
  • the second indication information is used to request a new TBS scaling factor, which can be understood as the second indication information is used to request adjustment of the TBS scaling factor of the PDSCH.
  • the scaling factors of one or more TBSs indicated by the third indication information may be called new TBS scaling factors, or TBS scaling factors in the NTN system, or different from those specified in existing protocols. TBS scaling factor.
  • the second indication information may be display information, which indicates: requesting TBS scaling of the PDSCH, or requesting a new TBS scaling factor.
  • the second indication information may include one or more bits, indicating by setting one or more bits to a specific value: requesting TBS scaling of the PDSCH, or requesting a new TBS scaling factor.
  • the second indication information may be implicit information.
  • the second indication information may implicitly indicate: requesting TBS scaling of PDSCH, or requesting a new TBS scaling factor.
  • the second indication information is carried through the physical random access channel PRACH.
  • the second indication information is information in PRACH.
  • the second indication information is carried explicitly through the PRACH, or the second indication information is carried implicitly through the PRACH.
  • the second indication information may be included in other uplink information.
  • the uplink information may be included in Msg1, Msg3, MsgA or uplink control information.
  • the terminal device sends the second indication information, including: the terminal device sends the PRACH in a first random access resource; corresponding to the PRACH through the first random access resource, the indication request TBS scaling for PDSCH, or request a new TBS scaling factor.
  • the network device receives the PRACH in the first random access resource; corresponding to the PRACH through the first random access resource, it indicates to request TBS scaling of the PDSCH, or to request a new TBS scaling factor.
  • the first random access resource may include at least one of the following: a time domain resource for the first random access, a frequency domain resource for the first random access, a random access resource corresponding to the first PRACH format, a first The random access resources corresponding to the random access channel opportunity (RACH Occasion, RO) and the random access resources corresponding to the first PRACH preamble.
  • the first random access resource may also include other resources, which are not listed in the embodiments of this application.
  • the first PRACH format may be called a first preamble format in other embodiments.
  • the terminal device sends the second indication information, including: the terminal device sends the PRACH corresponding to the first PRACH format; indicating the request for TBS scaling of the PDSCH by corresponding to the PRACH in the first PRACH format, Or request a new TBS scaling factor.
  • the network device receiving the second indication information includes: the network device receives the PRACH corresponding to the first PRACH format; and indicates the request through the first PRACH format corresponding to the PRACH. TBS scaling for PDSCH, or request a new TBS scaling factor.
  • the terminal device sends the second indication information, including: the terminal device sends the PRACH on the first random access channel opportunity RO; corresponding to the PRACH through the first random access channel opportunity RO, Indicates requesting TBS scaling of PDSCH, or requesting a new TBS scaling factor.
  • the network device receiving the second indication information includes: the network device receives the PRACH at the first random access channel opportunity RO; Corresponding to the PRACH, it is indicated to request TBS scaling of the PDSCH or to request a new TBS scaling factor.
  • the terminal device sends the second indication information, including: the terminal device sends the PRACH including the first PRACH preamble; indicating that the TBS scaling of the PDSCH is requested by the PRACH including the first PRACH preamble, Or request a new TBS scaling factor.
  • the network device receives the PRACH including the first PRACH preamble; by the PRACH including the first PRACH preamble, it is indicated to request TBS scaling of the PDSCH, or to request a new TBS scaling factor .
  • At least one of the first random access resource, the first PRACH format, the first RO, and the first PRACH preamble is stipulated in the protocol, or is determined by the terminal device according to preconfiguration, or It is configured by the network device to the terminal device.
  • the DCI used for scheduling PDSCH includes a first transport block TB scaling domain.
  • the downlink control information DCI used for scheduling PDSCH is scrambled by at least one of the following: paging wireless network temporary identity P-RNTI, random access wireless network temporary identity RA-RNTI, MsgB Wireless network temporary identifier MsgB-RNTI.
  • the first transmission block TB scaling domain is one or more bits.
  • the first transport block TB scaling field is 2 bits, and different TBS scaling factors can be indicated through different values in the first transport block TB scaling field.
  • the downlink control information DCI used for scheduling PDSCH is scrambled by at least one of the following: paging wireless network temporary identity P-RNTI, random access wireless network temporary identity RA-RNTI, MsgB wireless network temporary identity
  • the identifier MsgB-RNTI may correspond to the first transport block TB scaling domain included in the DCI used to schedule the PDSCH.
  • the TBS scaling factor in the existing protocol can be indicated through the first transport block TB scaling field, and/or the TBS scaling factor in the future protocol (ie, the protocol after this application) can be indicated.
  • the first transport block TB scaling field indicates the scaling factor in the existing protocol. TBS scaling factors without indicating TBS scaling factors in future protocols.
  • the first transport block TB scaling field may indicate existing
  • the TBS scaling factor in the protocol can also indicate the scaling factor of one of the multiple TBS scaling factors in the future protocol. That is to say, the first transmission block TB scaling field can indicate both the existing protocol and the future protocol. TBS scaling factor.
  • the first transport block TB scaling field may indicate the scaling factor of a certain TBS among the scaling factors of one or more TBSs.
  • the scaling factor of one or more TBSs to which the scaling factor of a TBS indicated by the TB scaling field of the first transport block belongs may be at least one of the following: scaling factors of one or more TBSs specified in previous protocols of this application. , the scaling factors of one or more TBSs specified in the protocol after this application, the scaling factors of one or more TBSs indicated by the first indication information or the third indication information, and the scaling factors of one or more TBSs preconfigured by the terminal device.
  • the DCI scrambled by at least one of P-RNTI, RA-RNTI, and MsgB-RNTI can be the same as the DCI scrambled by at least one of P-RNTI, RA-RNTI, and MsgB-RNTI.
  • CRC's DCI/DCI 1_0 have the same understanding.
  • the DCI used for scheduling PDSCH does not include the first TB scaling domain.
  • the DCI used for scheduling PDSCH is scrambled by at least one of the following: Cell Radio Network Temporary Identity C-RNTI, Configuration Scheduling Radio Network Temporary Identity CS-RNTI, Modulation Coding Scheme Cell Radio Network Temporary identifier MCS-C-RNTI, temporary cell radio network temporary identifier TC-RNTI, system message radio network temporary identifier SI-RNTI.
  • the DCI used for scheduling PDSCH is scrambled by at least one of the following: Cell Radio Network Temporary Identity C-RNTI, Configuration Scheduling Radio Network Temporary Identity CS-RNTI, Modulation Coding Scheme Cell Radio Network Temporary Identity MCS -C-RNTI, temporary cell radio network temporary identity TC-RNTI, and system message radio network temporary identity SI-RNTI may correspond to the fact that the DCI used for scheduling PDSCH does not include the first TB scaling domain.
  • DCI for scheduling PDSCH does not include the first TB scaling domain
  • other indication fields in the DCI for scheduling PDSCH may be used to indicate scaling factors of one or more TBSs.
  • the scaling factor of one or more TBSs where the scaling factor of a TBS indicated by other indication fields can be at least one of the following: scaling factors of one or more TBSs specified in the protocol before this application, scaling factors after this application.
  • the terminal equipment may use the scaling factor of one TBS indicated by the first indication information or the third indication information, so that, Since the first indication information or the third indication information indicates the scaling factor of one TBS, there is no need for the first TB scaling field to indicate which TBS scaling factor to use, or the terminal device can use multiple TBSs indicated by the first indication information or the third indication information.
  • the terminal equipment can determine it from the scaling factors of multiple TBSs through other indication fields in the DCI for scheduling PDSCH. The scaling factor for a certain TBS.
  • the DCI scrambled by at least one of C-RNTI, CS-RNTI, MCS-C-RNTI, TC-RNTI, and SI-RNTI can be the same as the DCI scrambled by C-RNTI, CS-RNTI.
  • MCS-C-RNTI, TC-RNTI, SI-RNTI at least one of the scrambled CRC DCI/DCI 1_0 shall be understood in the same way.
  • the embodiment of the present application provides a TBS scaling scheme for PDSCH.
  • the TBS scaling factor can be further adjusted; for PDSCH that does not support TBS scaling, a TBS scaling scheme can be introduced.
  • adjusting the TBS scaling factor can be understood as setting a TBS scaling factor different from that in the existing protocol.
  • DCI 1_0 of scrambling CRC using P-RNTI, RA-RNTI or MsgB-RNTI contains a 2-bit TB scaling field (i.e., the first TB scaling field mentioned above), which is used to indicate different TBS scaling in Table 1 factor to support the TBS scaling scheme for scheduling PDSCH.
  • Table 1 shows the correspondence between a TB scaling domain and scaling factors provided by related technologies:
  • the currently supported TBS scaling factor S can reduce TBS to up to 1/4.
  • further adjustment of the TBS scaling factor S can be considered to improve coverage performance.
  • the terminal device may decide whether to request the network device to adjust the TBS scaling factor (corresponding to the above-mentioned second indication information) based on the current coverage situation and whether it has the ability to adjust/use the TBS scaling factor.
  • the terminal device can implicitly request to adjust the TBS scaling factor through the specified random access resource.
  • the terminal device uses a specified PRACH format, or sends PRACH on a specified RO, or sends a specified PRACH preamble, to implicitly request the network device to adjust the TBS scaling factor.
  • FIG 8 is a schematic flowchart of a terminal device receiving a TBS scaling factor provided by an embodiment of the present application. As shown in Figure 8, the method includes:
  • the terminal device uses the specified PRACH format, or sends PRACH on the specified RO, or sends the specified PRACH preamble.
  • the terminal device receives the TBS scaling factor.
  • the TBS scaling factor received by the terminal device may be one or more adjusted TBS scaling factors.
  • the specific design plan is as follows: the system message broadcasts the TBS scaling factor and the protocol introduces the adjusted TBS scaling factor.
  • the network device may broadcast the TBS scaling factor in a system message and shall be applied to end devices requesting adjustment of the TBS scaling factor. Furthermore, for the system message broadcast TBS scaling factor, the following solutions are available:
  • Solution 1.1 The system message broadcasts a TBS scaling factor.
  • the system message broadcasts a TBS scaling factor S 1 (that is, the first TBS scaling factor mentioned above).
  • the TBS scaling factor S 1 broadcast by the system message can be applied.
  • the broadcast TBS scaling factor S 1 replaces the TBS scaling factor S 2 indicated by DCI 1_0. That is, if the terminal device requests to adjust the TBS scaling factor, the finally applied TBS scaling factor S is equal to the scaling factor S 1 configured in the system message; otherwise, the TBS scaling factor S is still determined based on the TB scaling domain indication in DCI 1_0.
  • the TB scaling field in 1_0 indicates OK.
  • the terminal device requests to adjust the TBS scaling factor, but the system message does not configure the corresponding value
  • a fixed value ie, the fourth TBS scaling factor mentioned above, such as 0.125, is provided as the broadcast TBS scaling factor S 1 Default value.
  • the network device since the network device receives the request from the terminal device for the TBS scaling factor, the network device will also use the fourth TBS scaling factor according to the protocol or pre-configuration.
  • Scenario 1.2 System messages broadcast multiple TBS scaling factors.
  • the broadcasted TBS scaling factor set can be applied.
  • the final applied TBS scaling factor is still indicated from the candidate values supported by the existing protocol.
  • Table 2 shows the corresponding relationship between the TB scaling domain and the corresponding scaling factor after no request to adjust the TBS scaling factor, and the corresponding relationship between the TB scaling domain and the corresponding scaling factor after requesting to adjust the TBS scaling factor.
  • a fixed set of TBS scaling factors i.e., the above-mentioned second set
  • Table 3 shows the correspondence between the TB scaling domain and the corresponding scaling factors after a request to adjust the TBS scaling factor and the network device is configured with a TBS scaling factor set, and the TB scaling domain, and the corresponding relationship between the TB scaling domain and a request to adjust the TBS scaling factor but the network device is not configured with TBS scaling. Correspondence between corresponding scaling factors after factor collection.
  • an additional set of adjusted TBS scaling factor candidate values ⁇ S 1 , S 2 ,... ⁇ (ie, the above-mentioned second set) is introduced.
  • the terminal device does not request to adjust the TBS scaling factor
  • the TBS scaling factor candidate values ⁇ 1, 0.5, 0.25 ⁇ supported by the existing protocol are applied; if the terminal device requests to adjust the TBS scaling factor, the newly introduced TBS scaling factor is applied
  • Table 4 shows the corresponding relationship between the TB scaling domain and the corresponding scaling factor after adjustment of the unrequested TBS scaling factor, and the corresponding relationship between the TB scaling domain and the corresponding scaling factor after the requested TBS scaling factor is adjusted.
  • TB scaling domain Scaling factor (TBS scaling factor adjustment not requested) Scaling factor (request TBS scaling factor adjustment) 00 1 0.125 01 0.5 0.0625 10 0.25 0.03125 11
  • the TBS scaling factor in the existing protocol can be adjusted, and the coverage performance can be effectively improved by supporting a smaller TBS scaling factor.
  • TBS scaling scheme For PDSCH scheduled using DCI 1_0 with scrambled CRC using RNTI other than P-RNTI, RA-RNTI and MsgB-RNTI, such as C-RNTI, CS-RNTI, MCS-C-RNTI, TC-RNTI or SI-RNTI, TBS scaling scheme is not currently supported.
  • RNTI other than P-RNTI
  • MsgB-RNTI such as C-RNTI, CS-RNTI, MCS-C-RNTI, TC-RNTI or SI-RNTI
  • the terminal device can decide whether to request TBS scaling from the network device based on the current coverage situation and whether it has the TBS scaling capability corresponding to the PDSCH. Among them, the terminal device can implicitly request to perform TBS scaling of PDSCH through designated random access resources. For example, the terminal device uses a specified PRACH format, or sends PRACH on a specified RO, or sends a specified PRACH preamble, to implicitly request TBS scaling from the network device.
  • Figure 9 is a schematic diagram of a terminal device performing TBS scaling of PDSCH provided by an embodiment of the present application. As shown in Figure 9, the method includes:
  • the terminal device uses the specified PRACH format, or sends PRACH on the specified RO, or sends the specified PRACH preamble.
  • the terminal device performs TBS scaling of PDSCH.
  • the determination of the TBS scaling factor cannot be indicated.
  • the following solutions can be used to determine the TBS scaling factor:
  • Solution 2.1 The system message broadcasts a TBS scaling factor.
  • the system message broadcasts a TBS scaling factor S.
  • Scenario 2.2 System messages broadcast multiple TBS scaling factors.
  • Solution 2.3 The protocol introduces TBS scaling factor candidate values.
  • a set of TBS scaling factor candidate values is introduced in the protocol to support the TBS scaling scheme of DCI 1_0 scheduling PDSCH using the above RNTI scrambling CRC.
  • the introduced TBS scaling factor candidate value can be applied.
  • the set of candidate values may be TBS scaling factor candidate values ⁇ 1, 0.5, 0.25 ⁇ supported by existing protocols, that is, the TBS scaling factors corresponding to P-RNTI, RA-RNTI and MsgB-RNTI in Table 1. It can also be a newly introduced TBS scaling factor candidate value for DCI 1_0 scheduled PDSCH using the above RNTI scrambling CRC, such as ⁇ 0.125, 0.0625, 0.03125 ⁇ .
  • Table 5 shows the TBS scaling factor of PDSCH:
  • An existing field in DCI 1_0 using the RNTI scrambled CRC described above is reinterpreted to indicate the applied TBS scaling factor.
  • the 5-bit MCS field in DCI 1_0 can be reinterpreted to simultaneously indicate the MCS and TBS scaling factors corresponding to the PDSCH scheduled by DCI 1_0.
  • the 2-bit most significant bit (MSB) indicates the applied TBS scaling factor, for example, 00 indicates the first value S 1 of set S, 01 indicates the second value S 2 of set S, and 10 indicates the third value S 3 of set S.
  • Table 6 shows the scaling factor indicated by the 2 MSBs of the MCS domain in DCI 1_0:
  • the terminal equipment determines the MCS corresponding to the PDSCH through the 3 least significant bits (LSB) of the MCS field in DCI 1_0.
  • Table 6 shows the MCS index indicated by the 3 LSBs of the MCS domain in DCI 1_0:
  • DAI Downlink Allocation Index
  • the applied TBS scaling factor for example, 00 indicates the first value of the set S 1 , 01 indicates the second value of the set S 2 , and 10 indicates the third value of the set S 3 .
  • Table 8 shows the corresponding relationship between the TB scaling domain and scaling factors introduced in DCI 1_0:
  • the embodiment of the present application provides a TBS scaling scheme for PDSCH.
  • the TBS scaling factor is further adjusted; for PDSCH that does not support TBS scaling, a TBS scaling scheme is introduced. Thereby effectively improving the coverage performance of PDSCH.
  • the system message broadcasts one or more TBS scaling factors, which can achieve more flexible TBS scaling factor configuration; the introduction of TBS scaling factors into the protocol can realize TBS scaling factor adjustment without increasing signaling overhead.
  • reinterpreting the existing domains in DCI does not require the introduction of new domains, which can save DCI signaling overhead; introducing the TB scaling domain can ensure that the indication function of the existing domains is not affected.
  • the embodiment of this application can be designed based on the NTN system and the PDSCH scheduled by DCI 1_0, and can be extended to any system that applies the PDSCH TBS scaling scheme, such as NR systems, LTE systems, etc.
  • the size of the sequence numbers of the above-mentioned processes does not mean the order of execution.
  • the execution order of each process should be determined by its functions and internal logic, and should not be used in this application.
  • the implementation of the examples does not constitute any limitations.
  • the terms “downlink”, “uplink” and “sidelink” are used to indicate the transmission direction of signals or data, where “downlink” is used to indicate that the transmission direction of signals or data is from the station.
  • uplink is used to indicate that the transmission direction of the signal or data is the second direction from the user equipment of the cell to the site
  • sidelink is used to indicate that the transmission direction of the signal or data is A third direction sent from User Device 1 to User Device 2.
  • downlink signal indicates that the transmission direction of the signal is the first direction.
  • the term “and/or” is only an association relationship describing associated objects, indicating that three relationships can exist. Specifically, A and/or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.
  • Figure 10 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the communication device 1000 includes: a communication unit 1001 for receiving system messages, wherein the system messages carry the first Instruction information; the communication unit 1001 is also configured to receive downlink control information DCI used to schedule the physical downlink shared channel PDSCH; the communication unit 1001 is also configured to receive a transport block size according to the first indication information and/or the DCI TBS scaled PDSCH.
  • the communication device 1000 further includes a determining unit configured to determine the scaled TBS, and then receive the PDSCH scaled by the transport block size TBS according to the scaled TBS.
  • a determining unit configured to determine the scaled TBS, and then receive the PDSCH scaled by the transport block size TBS according to the scaled TBS.
  • the first indication information is used to indicate the scaling factor of one or more TBSs of the PDSCH, or the first indication information is not used to indicate the scaling factor of one or more TBSs of the PDSCH. factor.
  • the DCI includes a first TB scaling field, wherein the first TB scaling field is used to indicate scaling factors or invalid values of one or more TBSs of the PDSCH, and the invalid values are invalid
  • the scaling factor of the TBS is either empty; or, the DCI does not include the first TB scaling domain.
  • the communication unit 1001 is further configured to: send second indication information according to the first indication information; the second indication information is used to request TBS scaling of the transport block size of the physical downlink shared channel PDSCH, or The second indication information is used to request a new TBS scaling factor;
  • the communication unit 1001 is also used to: receive the third indication information;
  • the communication unit 1001 is further configured to: receive the TBS-scaled PDSCH according to the third indication information and/or the DCI;
  • the communication unit 1001 is further configured to: receive the TBS-scaled PDSCH according to the first scaling factor indicated by the first indication information or the third indication information.
  • the communication unit 1001 is further configured to receive the TBS-scaled PDSCH according to the second scaling factor indicated by the DCI.
  • the communication unit 1001 is further configured to: receive the TBS scaled result according to the first scaling factor indicated by the first indication information or the third indication information and the second scaling factor indicated by the DCI. PDSCH.
  • the determining unit is further configured to determine a third scaling factor based on the product of the first scaling factor indicated by the first indication information or the third indication information and the second scaling factor indicated by the DCI. ;
  • the communication unit 1001 is further configured to: receive the TBS-scaled PDSCH according to the third scaling factor.
  • the communication unit 1001 is further configured to: receive the TBS-scaled PDSCH according to a fourth scaling factor; wherein the fourth scaling factor is a positive value ranging from greater than 0 to less than or equal to 1. number.
  • the determining unit is further configured to: determine a fifth scaling factor according to the fourth scaling factor and the second scaling factor indicated by the DCI; the communication unit 1001 is further configured to: determine according to the fifth scaling factor. Scaling factor to receive TBS scaling of the PDSCH.
  • the determining unit is further configured to determine the fifth scaling factor according to the product of the fourth scaling factor and the second scaling factor indicated by the DCI.
  • the determining unit is further configured to: determine a sixth scaling factor according to the first set including one or more scaling factors indicated by the first indication information or the third indication information; the communication unit 1001 is also configured to: Used for: receiving the TBS-scaled PDSCH according to the sixth scaling factor.
  • the determining unit is further configured to: determine a seventh scaling factor according to the sixth scaling factor and the second scaling factor indicated by the DCI; and the communication unit 1001 is further configured to: determine according to the seventh scaling factor. Scaling factor to receive TBS scaling of the PDSCH.
  • the determining unit is further configured to determine the seventh scaling factor according to the product of the sixth scaling factor and the second scaling factor indicated by the DCI.
  • the determining unit is further configured to: determine the eighth scaling factor according to a second set including one or more scaling factors, wherein the second set is agreed upon in the protocol, or the second The set is determined by the terminal device according to preconfiguration, or the second set is a default value set; the communication unit 1001 is further configured to: receive the TBS-scaled PDSCH according to the eighth scaling factor.
  • the determining unit is further configured to: determine a ninth scaling factor according to the eighth scaling factor and the second scaling factor indicated by the DCI; the communication unit 1001 is further configured to: determine according to the ninth scaling factor Scaling factor to receive TBS scaling of the PDSCH.
  • the determining unit is further configured to determine the ninth scaling factor according to the product of the eighth scaling factor and the second scaling factor indicated by the DCI.
  • the sixth TBS scaling factor and/or the eighth TBS scaling factor are determined according to the DCI indication for scheduling PDSCH.
  • the sixth TBS scaling factor and/or the eighth TBS scaling factor are determined according to the first TB scaling domain indication in the DCI for scheduling PDSCH.
  • the sixth TBS scaling factor and/or the eighth TBS scaling factor are determined according to the modulation coding scheme MCS domain indication in the DCI used for scheduling PDSCH.
  • the MCS field includes a first bit and a second bit; the first bit is used to indicate the sixth TBS scaling factor and/or the eighth TBS scaling factor, and the The second bit is used to indicate the MCS corresponding to the PDSCH.
  • the first bit is the most significant bit MSB of a first number of bits
  • the second bit is the least significant bit LSB of a second number of bits
  • the first bit is the least significant bit of the first number of bits
  • the second bit is the most significant bit of the second number of bits.
  • the first bit is the most significant bit MSB of 2 bits, and the second bit is the least significant bit LSB of 3 bits; or,
  • the first bit is the least significant bit of 2 bits, and the second bit is the most significant bit of 3 bits.
  • the communication device 1000 further includes an acquisition unit configured to: acquire an MCS index set, and the second bit is used to indicate the MCS corresponding to the PDSCH in the MCS index set.
  • the sixth TBS scaling factor and/or the eighth TBS scaling factor are determined according to one or more reserved bit indications in the DCI used for scheduling PDSCH; or,
  • One or more reserved bits in the DCI for scheduling PDSCH are configured as the second TB scaling domain, the sixth TBS scaling factor and/or the eighth TBS scaling factor, which are indicated according to the second TB scaling domain definite.
  • the second indication information is carried through the physical random access channel PRACH.
  • the communication unit 1001 is further configured to: send the PRACH in the first random access resource; corresponding to the PRACH through the first random access resource, indicate a request for TBS scaling of the PDSCH, or request a new TBS scaling factor.
  • the communication unit 1001 is further configured to: send the PRACH corresponding to the first PRACH format; indicate a request for TBS scaling of the PDSCH corresponding to the PRACH through the first PRACH format, or request a new TBS scaling. factor.
  • the communication unit 1001 is further configured to: send the PRACH on the first random access channel opportunity RO; and indicate a request for TBS scaling of the PDSCH corresponding to the PRACH through the first random access channel opportunity RO. , or request a new TBS scaling factor.
  • the communication unit 1001 is further configured to: send the PRACH including the first PRACH preamble; indicate a request for TBS scaling of the PDSCH through the PRACH including the first PRACH preamble, or request a new TBS scaling. factor.
  • At least one of the first random access resource, the first PRACH format, the first RO, and the first PRACH preamble is stipulated in the protocol, or is determined by the terminal device according to preconfiguration, or It is configured by the network device to the terminal device.
  • the communication unit 1001 is further configured to: when the measured value of the reference signal is less than or equal to the threshold value, and/or the terminal equipment has the ability to receive the TBS scaled PDSCH, send the first 2. Instruction information.
  • the DCI used for scheduling PDSCH includes the first transport block TB scaling domain, and/or the downlink control information DCI used for scheduling PDSCH is scrambled by at least one of the following: Calling wireless network temporary identity P-RNTI, random access wireless network temporary identity RA-RNTI, MsgB wireless network temporary identity MsgB-RNTI;
  • the DCI used for scheduling PDSCH does not include the first TB scaling domain, and/or the DCI used for scheduling PDSCH is scrambled by at least one of the following: Cell Radio Network Temporary Identity C-RNTI, Configuration Scheduling Wireless network temporary identifier CS-RNTI, modulation and coding scheme cell wireless network temporary identifier MCS-C-RNTI, temporary cell wireless network temporary identifier TC-RNTI, and system message wireless network temporary identifier SI-RNTI.
  • FIG 11 is a schematic diagram 2 of the structure of a communication device provided by an embodiment of the present application.
  • the communication device 1100 includes: a communication unit 1101 for sending a system message, wherein the system message carries a first indication. Information; the communication unit 1101 is also configured to send downlink control information DCI for scheduling the physical downlink shared channel PDSCH; wherein the first indication information and/or the DCI are used for the terminal equipment to receive the transmission block size TBS scaling The PDSCH.
  • the first indication information is used to indicate the scaling factor of one or more TBSs of the PDSCH, or the first indication information is not used to indicate the scaling factor of one or more TBSs of the PDSCH. factor.
  • the DCI includes a first TB scaling field, wherein the first TB scaling field is used to indicate scaling factors or invalid values of one or more TBSs of the PDSCH, and the invalid values are invalid
  • the scaling factor of the TBS is either empty; or, the DCI does not include the first TB scaling domain.
  • the communication unit 1101 is further configured to: receive second indication information; the second indication information is used to request TBS scaling of the transport block size of the physical downlink shared channel PDSCH, or the second indication information is used to Request a new TBS scaling factor;
  • the communication unit 1101 is also used to: send third instruction information;
  • the third indication information and/or the DCI are used for the terminal equipment to receive the PDSCH with a transport block size TBS scaled.
  • the first indication information or the third indication information indicates a first scaling factor; the first scaling factor is used for the terminal equipment to receive the TBS scaled PDSCH.
  • the DCI indicates a second scaling factor; the second scaling factor is used for the terminal device to receive the TBS scaled PDSCH.
  • the first indication information or the third indication information indicates a first scaling factor
  • the DCI carries a second scaling factor
  • the first scaling factor and the second scaling factor are used for the The terminal equipment receives the TBS-scaled PDSCH.
  • the first indication information and/or the DCI are used for the terminal equipment to receive the TBS-scaled PDSCH according to a fourth scaling factor; wherein the fourth scaling factor is a value of The range is a positive number greater than 0 and less than or equal to 1.
  • the first indication information and/or the DCI are used for the terminal equipment to receive the TBS-scaled PDSCH according to the fourth scaling factor and the second scaling factor indicated by the DCI. .
  • the first indication information or the third indication information indicates a first set including one or more scaling factors; the first set is used for the terminal device to determine a sixth scaling factor, according to the The sixth scaling factor is to receive the TBS scaled PDSCH.
  • the first set is used by the terminal equipment to determine the sixth scaling factor, and receive the TBS scaled PDSCH according to the sixth scaling factor and the second scaling factor indicated by the DCI. .
  • the first indication information and/or the DCI are used by the terminal device to determine an eighth scaling factor according to a second set including one or more scaling factors.
  • the second set is agreed upon by a protocol, or the second set is determined by the terminal device according to preconfiguration, or the second set is a default value set.
  • the first indication information and/or the DCI are used by the terminal device to determine an eighth scaling factor according to a second set including one or more scaling factors. factor and the second scaling factor indicated by the DCI, receive the TBS scaled PDSCH.
  • the sixth TBS scaling factor and/or the eighth TBS scaling factor are determined according to the DCI indication for scheduling PDSCH.
  • the sixth TBS scaling factor and/or the eighth TBS scaling factor are determined according to the first TB scaling domain indication in the DCI for scheduling PDSCH.
  • the sixth TBS scaling factor and/or the eighth TBS scaling factor are determined according to the modulation coding scheme MCS domain indication in the DCI used for scheduling PDSCH.
  • the MCS field includes a first bit and a second bit; the first bit is used to indicate the sixth TBS scaling factor and/or the eighth TBS scaling factor, and the The second bit is used to indicate the MCS corresponding to the PDSCH.
  • the first bit is the most significant bit MSB of a first number of bits
  • the second bit is the least significant bit LSB of a second number of bits
  • the first bit is the least significant bit of the first number of bits
  • the second bit is the most significant bit of the second number of bits.
  • the first bit is the most significant bit MSB of 2 bits, and the second bit is the least significant bit LSB of 3 bits; or,
  • the first bit is the least significant bit of 2 bits, and the second bit is the most significant bit of 3 bits.
  • the communication unit 1101 is further configured to: send an MCS index set; the second bit is used to indicate the MCS corresponding to the PDSCH in the MCS index set.
  • the sixth TBS scaling factor and/or the eighth TBS scaling factor are determined according to one or more reserved bit indications in the DCI used for scheduling PDSCH; or,
  • One or more reserved bits in the DCI for scheduling PDSCH are configured as the second TB scaling domain, the sixth TBS scaling factor and/or the eighth TBS scaling factor, which are indicated according to the second TB scaling domain definite.
  • the second indication information is carried through the physical random access channel PRACH.
  • the communication unit 1101 is further configured to: receive the PRACH in the first random access resource; and indicate a request for TBS scaling of the PDSCH corresponding to the PRACH through the first random access resource, or request a new TBS scaling factor.
  • the communication unit 1101 is further configured to: receive the PRACH corresponding to the first PRACH format; indicate a request for TBS scaling of the PDSCH corresponding to the PRACH through the first PRACH format, or request a new TBS scaling. factor.
  • the communication unit 1101 is further configured to: receive the PRACH on the first random access channel opportunity RO; and indicate a request for TBS scaling of the PDSCH corresponding to the PRACH through the first random access channel opportunity RO. , or request a new TBS scaling factor.
  • the communication unit 1101 is further configured to: receive the PRACH including the first PRACH preamble; indicate a request for TBS scaling of the PDSCH through the PRACH including the first PRACH preamble, or request a new TBS scaling. factor.
  • At least one of the first random access resource, the first PRACH format, the first RO, and the first PRACH preamble is stipulated in the protocol, or is determined by the terminal device according to preconfiguration, or It is configured by the network device to the terminal device.
  • the DCI used for scheduling PDSCH includes the first transport block TB scaling domain, and/or the downlink control information DCI used for scheduling PDSCH is scrambled by at least one of the following: Calling wireless network temporary identity P-RNTI, random access wireless network temporary identity RA-RNTI, MsgB wireless network temporary identity MsgB-RNTI;
  • the DCI used for scheduling PDSCH does not include the first TB scaling domain, and/or the DCI used for scheduling PDSCH is scrambled by at least one of the following: Cell Radio Network Temporary Identity C-RNTI, Configuration Scheduling Wireless network temporary identifier CS-RNTI, modulation and coding scheme cell wireless network temporary identifier MCS-C-RNTI, temporary cell wireless network temporary identifier TC-RNTI, and system message wireless network temporary identifier SI-RNTI.
  • Figure 12 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the communication device can be a terminal device or a network device.
  • the communication device 1200 shown in Figure 12 includes a processor 1210.
  • the processor 1210 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the communication device 1200 may further include a memory 1220.
  • the processor 1210 can call and run the computer program from the memory 1220 to implement the method in the embodiment of the present application.
  • the memory 1220 may be a separate device independent of the processor 1210, or may be integrated into the processor 1210.
  • the communication device 1200 can also include a transceiver 1230, and the processor 1210 can control the transceiver 1230 to communicate with other devices. Specifically, it can send information or data to other devices, or receive other devices. Information or data sent by the device.
  • the transceiver 1230 may include a transmitter and a receiver.
  • the transceiver 1230 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 1200 may specifically be a terminal device or a network device in the embodiment of the present application, and the communication device 1200 may implement the corresponding processes implemented by the terminal device or the network device in the various methods of the embodiment of the present application. For the sake of simplicity, , which will not be described in detail here.
  • Figure 13 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • the chip 1300 shown in Figure 13 includes a processor 1310.
  • the processor 1310 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the chip 1300 may also include a memory 1320.
  • the processor 1310 can call and run the computer program from the memory 1320 to implement the method in the embodiment of the present application.
  • the memory 1320 may be a separate device independent of the processor 1310, or may be integrated into the processor 1310.
  • the chip 1300 may also include an input interface 1330.
  • the processor 1310 can control the input interface 1330 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.
  • the chip 1300 may also include an output interface 1340.
  • the processor 1310 can control the output interface 1340 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.
  • the chip can be applied to the terminal device or network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the terminal device or the network device in the various methods of the embodiment of the present application. For the sake of simplicity, here No longer.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • Embodiments of the present application also provide a computer program product.
  • the computer program product includes a computer storage medium.
  • the computer storage medium stores a computer program.
  • the computer program includes instructions that can be executed by at least one processor. When the When the instructions are executed by the at least one processor, the communication method in any embodiment of the present application is implemented.
  • the computer program product can be applied to the terminal device or network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding steps implemented by the terminal device or the network device in the various methods of the embodiment of the present application.
  • the process for the sake of brevity, will not be repeated here.
  • the computer program product in the embodiment of this application may also be called a software product in other embodiments.
  • An embodiment of the present application also provides a computer program, which causes a computer to execute the communication method in any embodiment of the present application.
  • the computer program can be applied to the terminal device or network device in the embodiments of the present application.
  • the computer program When the computer program is run on the computer, it causes the computer to perform the various methods in the embodiments of the present application by the terminal device or the network.
  • the corresponding process of equipment implementation will not be described here for the sake of simplicity.
  • the processor, communication device or chip in the embodiment of the present application may be an integrated circuit chip and has signal processing capabilities. During the implementation process, each step of the above method embodiment can be completed through an integrated logic circuit of hardware in the processor or instructions in the form of software.
  • the above-mentioned processor, communication device or chip may include the integration of any one or more of the following: general-purpose processor, application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), digital signal processor (Digital Signal Processor, DSP), digital Digital Signal Processing Device (DSPD), Programmable Logic Device (PLD), Field Programmable Gate Array (FPGA), Central Processing Unit (CPU), graphics Processor (Graphics Processing Unit, GPU), embedded neural network processing units (NPU), controller, microcontroller, microprocessor, programmable logic device, discrete gate or transistor logic device, discrete Hardware components.
  • ASIC Application Specific Integrated Circuit
  • DSP digital Signal Processor
  • DSPD digital Digital Signal Processing Device
  • PLD Programmable Logic Device
  • FPGA Field Programmable Gate Array
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.
  • the steps of the method disclosed in conjunction with the embodiments of the present application can be directly implemented by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other mature storage media in this field.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • non-volatile memory may be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory may be Random Access Memory (RAM), which is used as an external cache.
  • RAM Random Access Memory
  • RAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • enhanced SDRAM ESDRAM
  • Synchlink DRAM SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • the memory in the embodiment of the present application can also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM) , DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM) ), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, memories in embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.
  • a time interval, a time period, a duration range, a duration or a time window, etc. may include all endpoint times, or may include part of the endpoint times (for example, include the left endpoint time without Include the right endpoint time, or include the right endpoint time but not the left endpoint time), or exclude the endpoint time.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code. .

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Abstract

本申请实施例提供一种通信方法、装置、设备、存储介质、芯片、产品及程序，该方法包括：终端设备接收系统消息，其中，所述系统消息携带第一指示信息；所述终端设备接收用于调度物理下行共享信道PDSCH的下行控制信息DCI；根据所述第一指示信息和/或所述DCI，所述终端设备接收传输块大小TBS缩放的所述PDSCH。

Description

通信方法、装置、设备、存储介质、芯片、产品及程序 技术领域
本申请实施例涉及移动通信技术领域，具体涉及一种通信方法、装置、设备、存储介质、芯片、产品及程序。
背景技术
在通信期间，终端设备和网络设备可使用传输块来传输信息。然而，在下行传输中，终端设备如何接收传输块大小(Transport Block Size，TBS)缩放的物理下行共享信道(Physical Downlink Shared Channel，PDSCH)，是本领域一直以来关注的问题。
发明内容
本申请实施例提供一种通信方法、装置、设备、存储介质、芯片、产品及程序。
第一方面，本申请实施例提供一种通信方法，所述方法包括：
终端设备接收系统消息，其中，所述系统消息携带第一指示信息；
所述终端设备接收用于调度物理下行共享信道PDSCH的下行控制信息DCI；
根据所述第一指示信息和/或所述DCI，所述终端设备接收传输块大小TBS缩放的所述PDSCH。
第二方面，本申请实施例提供一种通信方法，所述方法包括：
网络设备发送系统消息，其中，所述系统消息携带第一指示信息；
所述网络设备发送用于调度物理下行共享信道PDSCH的下行控制信息DCI；
其中，所述第一指示信息和/或所述DCI，用于终端设备接收传输块大小TBS缩放的所述PDSCH。
第三方面，本申请实施例提供一种通信装置，包括：
通信单元，用于接收系统消息，其中，所述系统消息携带第一指示信息；
所述通信单元，还用于接收用于调度物理下行共享信道PDSCH的下行控制信息DCI；
所述通信单元，还用于根据所述第一指示信息和/或所述DCI，所述终端设备接收传输块大小TBS缩放的所述PDSCH。
第四方面，本申请实施例提供一种通信装置，包括：
通信单元，用于发送系统消息，其中，所述系统消息携带第一指示信息；
所述通信单元，还用于发送用于调度物理下行共享信道PDSCH的下行控制信息DCI；
其中，所述第一指示信息和/或所述DCI，用于终端设备接收传输块大小TBS缩放的所述PDSCH。
第五方面，本申请实施例提供一种通信设备，包括：处理器和存储器，
所述存储器存储有可在处理器上运行的计算机程序，
所述处理器执行所述程序时实现第一方面或第二方面所述方法。
第六方面，本申请实施例提供一种计算机存储介质，所述计算机存储介质存储有一个或者多个程序，所述一个或者多个程序可被一个或者多个处理器执行，以实现第一方面或第二方面所述方法。
第八方面，本申请实施例提供一种芯片，包括：处理器，用于从存储器中调用并运行计算机程序，以实现如第一方面或第二方面所述方法。
第七方面，本申请实施例提供一种计算机程序产品，所述计算机程序产品包括计算机存储介质，所述计算机存储介质存储计算机程序，所述计算机程序包括能够由至少一个处理器执行的指令，当所述指令由所述至少一个处理器执行时实现第一方面或第二方面所述方法。
第九方面，本申请实施例提供一种计算机程序，所述计算机程序使得计算机执行如第一方面或第二方面所述方法。
在本申请实施例中，终端设备接收系统消息，其中，所述系统消息携带第一指示信息；所述终端设备接收用于调度物理下行共享信道PDSCH的下行控制信息DCI；根据所述第一指示信息和/或所述DCI，所述终端设备接收传输块大小TBS缩放的所述PDSCH。这样，终端设备可以根据所述第一指示信息和/或所述DCI，接收传输块大小TBS缩放的所述PDSCH，从而能够准确接收到TBS缩放的所述PDSCH。
附图说明
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1为本申请实施例的一个应用场景的示意图；
图2是本申请实施例提供的一种通信系统的架构示意图；
图3是本申请实施例提供的另一种通信系统的架构示意图；
图4为本申请实施例提供的基于透传转发卫星的NTN场景的示意图；
图5为本申请实施例提供的基于再生转发卫星的NTN场景的示意图；
图6为本申请实施例提供的一种通信方法的流程示意图；
图7为本申请实施例提供的另一种通信方法的流程示意图；
图8为本申请实施例提供的一种UE接收TBS缩放因子流程示意图；
图9为本申请实施例提供的一种UE执行PDSCH的TBS缩放流程示意图；
图10是本申请实施例提供的通信装置的结构组成示意图一；
图11是本申请实施例提供的通信装置的结构组成示意图二；
图12是本申请实施例提供的一种通信设备示意性结构图；
图13是本申请实施例的芯片的示意性结构图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。本申请实施例所记载的技术方案之间，在不冲突的情况下，可以任意组合。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
通信系统场景包括地面通信网络(Terrestrial Network，TN)和非地面通信网络(Non Terrestrial Network，NTN)。其中，NTN可以采用卫星通信的方式向地面用户提供通信服务。NTN系统可以包括NR-NTN和IoT-NTN系统。
图1为本申请实施例的一个应用场景的示意图，如图1所示，通信系统100可以为地面通信网络系统，通信系统100可以包括终端设备110和网络设备120。网络设备120可以通过空口与终端设备110通信。终端设备110和网络设备120之间支持多业务传输。
应理解，本申请实施例仅以通信系统100进行示例性说明，但本申请实施例不限定于此。也就是说，本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、先进的长期演进(Advanced long term evolution，LTE-A)系统、新无线(New Radio，NR)系统、NR系统的演进系统、免授权频谱上的LTE(LTE-based access to unlicensed spectrum，LTE-U)系统、免授权频谱上的NR(NR-based access to unlicensed spectrum，NR-U)系统、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、无线局域网(Wireless Local Area Networks，WLAN)、无线保真(Wireless Fidelity，WiFi)、LTE时分双工(Time Division Duplex，TDD)、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、物联网(Internet of Things，IoT)系统、窄带物联网(Narrow Band Internet of Things，NB-IoT)系统、增强的机器类型通信(enhanced Machine-Type Communications，eMTC)系统、或未来的通信系统(例如6G、7G通信系统)等。
本申请实施例中的网络设备120可以包括接入网设备121和/或核心网设备122。接入网设备可以为特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域内的终端设备110(例如UE)进行通信。
本申请任一实施例中的终端设备是一种具有无线通信功能的设备，可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。本申请任一实施例中的终端设备可以称为用户设备(User Equipment，UE)、移动台(Mobile Station，MS)、移动终端(Mobile Terminal，MT)、用户单元、用户站、移动站、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。终端设备可以包括以下之一或者至少两者的组合：物联网(Internet of Things，IoT)设备、卫星终端、无线本地环路(Wireless Local Loop，WLL) 站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、服务器、手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、掌上电脑、台式计算机、个人数字助理、便捷式媒体播放器、智能音箱、导航装置、智能手表、智能眼镜、智能项链等可穿戴设备、计步器、数字TV、虚拟现实(Virtual Reality，VR)终端设备、增强现实(Augmented Reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端以及车联网系统中的车、车载设备、车载模块、无线调制解调器(modem)、手持设备(handheld)、客户终端设备(Customer Premise Equipment，CPE)、智能家电。
可选地，终端设备110可以是任意终端设备，其包括但不限于与网络设备120或其它终端设备采用有线或者无线连接的终端设备。
可选地，终端设备110可以用于设备到设备(Device to Device，D2D)的通信。
接入网设备121可以包括以下之一或者至少两者的组合：长期演进(Long Term Evolution，LTE)系统中的演进型基站(Evolutional Node B，eNB或eNodeB)、下一代无线接入网(Next Generation Radio Access Network，NG RAN)设备、NR系统中的基站(gNB)、小站、微站、云无线接入网络(Cloud Radio Access Network，CRAN)中的无线控制器、无线保真(Wireless-Fidelity，Wi-Fi)的接入点、传输接收点(transmission reception point，TRP)、中继站、接入点、车载设备、可穿戴设备、集线器、交换机、网桥、路由器、未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)中的网络设备等。
核心网设备122可以是5G核心网(5G Core，5GC)设备，核心网设备122可以包括以下之一或者至少两者的组合：接入与移动性管理功能(Access and Mobility Management Function，AMF)、认证服务器功能(Authentication Server Function，AUSF)、用户面功能(User Plane Function，UPF)、会话管理功能(Session Management Function，SMF)、位置管理功能(Location Management Function，LMF)。在另一些实施方式中，核心网络设备也可以是LTE网络的分组核心演进(Evolved Packet Core，EPC)设备，例如，会话管理功能+核心网络的数据网关(Session Management Function+Core Packet Gateway，SMF+PGW-C)设备。应理解，SMF+PGW-C可以同时实现SMF和PGW-C所能实现的功能。在网络演进过程中，上述核心网设备122也有可能叫其它名字，或者通过对核心网的功能进行划分形成新的网络实体，对此本申请实施例不做限制。
通信系统100中的各个功能单元之间还可以通过下一代网络(next generation，NG)接口建立连接实现通信。
例如，终端设备通过NR接口与接入网设备建立空口连接，用于传输用户面数据和控制面信令；终端设备可以通过NG接口1(简称N1)与AMF建立控制面信令连接；接入网设备例如下一代无线接入基站(gNB)，可以通过NG接口3(简称N3)与UPF建立用户面数据连接；接入网设备可以通过NG接口2(简称N2)与AMF建立控制面信令连接；UPF可以通过NG接口4(简称N4)与SMF建立控制面信令连接；UPF可以通过NG接口6(简称N6)与数据网络交互用户面数据；AMF可以通过NG接口11(简称N11)与SMF建立控制面信令连接；SMF可以通过NG接口7(简称N7)与PCF建立控制面信令连接。
图1示例性地示出了一个基站、一个核心网设备和两个终端设备，可选地，该无线通信系统100可以包括多个基站设备并且每个基站的覆盖范围内可以包括其它数量的终端设备，本申请实施例对此不做限定。
非地面网络(Non Terrestrial Network，NTN)一般采用卫星通信的方式向地面用户提供通信服务。相比地面蜂窝网通信，卫星通信具有很多独特的优点。首先，卫星通信不受用户地域的限制，例如一般的陆地通信不能覆盖海洋、高山、沙漠等无法搭设通信设备或由于人口稀少而不做通信覆盖的区域，而对于卫星通信来说，由于一颗卫星即可以覆盖较大的地面，加之卫星可以围绕地球做轨道运动，因此理论上地球上每一个角落都可以被卫星通信覆盖。其次，卫星通信有较大的社会价值。卫星通信在边远山区、贫穷落后的国家或地区都可以以较低的成本覆盖到，从而使这些地区的人们享受到先进的语音通信和移动互联网技术，有利于缩小与发达地区的数字鸿沟，促进这些地区的发展。再次，卫星通信距离远，且通信距离增大通讯的成本没有明显增加；最后，卫星通信的稳定性高，不受自然灾害的限制。
NTN技术可以和各种通信系统结合。例如，NTN技术可以和NR系统结合为NR-NTN系统。又例如，NTN技术可以和物联网(Internet of Things，IoT)系统结合为IoT-NTN系统。作为示例，IoT-NTN系统可以包括NB-IoT-NTN系统和eMTC-NTN系统。
图2是本申请实施例提供的一种通信系统的架构示意图，如图2所示，其中，图2的通信系统200可以为非地面通信网络系统，通信系统200包括终端设备201和卫星202，终端设备201和卫星202之 间可以进行无线通信。终端设备201和卫星202之间所形成的网络还可以称为NTN。在图2所示的通信系统200的架构中，卫星202可以具有基站的功能，终端设备201和卫星202之间可以直接通信。在系统架构下，可以将卫星202称为网络设备。在本申请的一些实施例中，通信系统200中可以包括多个网络设备202，并且每个网络设备202的覆盖范围内可以包括其它数量的终端设备，本申请实施例对此不做限定。
图3是本申请实施例提供的另一种通信系统的架构示意图，如图3所示，其中，图3的通信系统300可以为非地面通信网络系统，通信系统300包括终端设备301、卫星302和基站303，终端设备301和卫星302之间可以进行无线通信，卫星302与基站303之间可以通信。终端设备301、卫星302和基站303之间所形成的网络还可以称为NTN。在图3所示的通信系统300的架构中，卫星302可以不具有基站的功能，终端设备301和基站303之间的通信需要通过卫星302的中转。在该种系统架构下，可以将基站303称为网络设备。在本申请的一些实施例中，通信系统中可以包括多个基站303，并且每个基站303的覆盖范围内可以包括其它数量的终端设备，本申请实施例对此不做限定。所述基站303可以是图1中的接入网设备121。
应理解，上述卫星202或卫星302包括但不限于：低地球轨道(Low-Earth Orbit，LEO)卫星、中地球轨道(Medium-Earth Orbit，MEO)卫星、地球同步轨道(Geostationary Earth Orbit，GEO)卫星、高椭圆轨道(High Elliptical Orbit，HEO)卫星等等。卫星可采用多波束覆盖地面，例如，一颗卫星可以形成几十甚至数百个波束来覆盖地面。换言之，一个卫星波束可以覆盖直径几十至上百公里的地面区域，以保证卫星的覆盖以及提升整个卫星通信系统的系统容量。
作为示例，LEO卫星的高度范围可以为500千米～1500千米，相应轨道周期约可以为1.5小时～2小时，用户间单跳通信的信号传播延迟一般可小于20毫秒，最大卫星可视时间可以为20分钟，LEO卫星的信号传播距离短且链路损耗少，对用户终端的发射功率要求不高。GEO卫星的轨道高度可以35786km，围绕地球旋转周期可以为24小时，用户间单跳通信的信号传播延迟一般可为250毫秒。
为了保证卫星的覆盖以及提升整个卫星通信系统的系统容量，卫星采用多波束覆盖地面，一颗卫星可以形成几十甚至数百个波束来覆盖地面；一个卫星波束可以覆盖直径几十至上百公里的地面区域。
需要说明的是，图1至图3只是以示例的形式示意本申请所适用的系统，当然，本申请实施例所示的方法还可以适用于其它系统。此外，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。还应理解，在本申请的实施例中提到的“指示”可以是直接指示，也可以是间接指示，还可以是表示具有关联关系。举例说明，A指示B，可以表示A直接指示B，例如B可以通过A获取；也可以表示A间接指示B，例如A指示C，B可以通过C获取；还可以表示A和B之间具有关联关系。还应理解，在本申请的实施例中提到的“对应”可表示两者之间具有直接对应或间接对应的关系，也可以表示两者之间具有关联关系，也可以是指示与被指示、配置与被配置等关系。还应理解，在本申请的实施例中提到的“预定义”、“协议约定”、“预先确定”或“预定义规则”可以通过在设备(例如，包括终端设备和网络设备)中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现，本申请对于其具体的实现方式不做限定。比如预定义可以是指协议中定义的。还应理解，本申请实施例中，所述“协议”可以指通信领域的标准协议，例如可以包括LTE协议、NR协议以及应用于未来的通信系统中的相关协议，本申请对此不做限定。
卫星从其提供的功能上可以分为透传转发(transparent payload)和再生转发(regenerative payload)两种。对于透传转发卫星，可以提供无线频率滤波，频率转换和放大的功能，可以提供信号的透明转发，不会改变其转发的波形信号。对于再生转发卫星，除了提供无线频率滤波，频率转换和放大的功能，还可以提供解调/解码，路由/转换，编码/调制的功能，其具有基站的部分或者全部功能。
在NTN中，可以包括一个或多个网关(Gateway)，用于卫星和终端之间的通信。
图4为本申请实施例提供的基于透传转发卫星的NTN场景的示意图，图5为本申请实施例提供的基于再生转发卫星的NTN场景的示意图。
如图4所示，对于基于透传转发卫星的NTN场景，网关和卫星之间通过馈线链路(Feeder link)进行通信，卫星和终端之间可以通过服务链路(service link)进行通信。如图5所示，对于基于再生转发卫星的NTN场景，卫星和卫星之间通过星间链路(InterStar link)进行通信，网关和卫星之间通过馈线链路(Feeder link)进行通信，卫星和终端之间可以通过服务链路(service link)进行通信。
为便于理解本申请实施例的技术方案，以下对本申请实施例的相关技术进行说明，以下相关技术作为可选方案与本申请实施例的技术方案可以进行任意结合，其均属于本申请实施例的保护范围。
对于使用小区无线网络临时标识(Cell-Radio Network Temporary Identifier，C-RNTI)，调制编码方 案小区无线网络临时标识(Modulation Coding Scheme-Cell-Radio Network Temporary Identifier，MCS-C-RNTI)，临时小区无线网络临时标识(Temporary Cell-Radio Network Temporary Identifier，TC-RNTI)，配置调度无线网络临时标识(Configured Scheduling-Radio Network Temporary Identity，CS-RNTI)或系统信息无线网络临时标识(System Information Radio Network Temporary Identifier，SI-RNTI)加扰循环冗余校验(Cyclic Redundancy Check，CRC)的DCI 1_0，DCI 1_1或DCI 1_2调度的物理下行共享信道(Physical Downlink Shared Channel，PDSCH)，终端设备可以按如下规定确定TBS：
(1)确定时隙内的RE数(N RE)。
首先，使用公式
Figure PCTCN2022113724-appb-000001
确定一个物理资源块(Physical Resource Block，PRB)内用于PDSCH传输的资源单元(Resource Element，RE)数，其中，
Figure PCTCN2022113724-appb-000002
是一个PRB内的子载波数，
Figure PCTCN2022113724-appb-000003
是时隙内PDSCH分配的符号数，
Figure PCTCN2022113724-appb-000004
是在调度时间内每个PRB上解调参考信号(DeModulation Reference Signal，DMRS)的RE数，
Figure PCTCN2022113724-appb-000005
是由高层参数配置的信令开销。
然后，使用公式N RE＝min(156,N′ RE)·n PRB，确定用于PDSCH传输的总RE数(N RE)，其中n PRB是该终端设备分配的总PRB数。
(2)使用公式N info＝N RE·R·Q m·v，获得未量化的中间变量N info，其中R是目标码率，Q m是调制阶数，v是传输层数。
(3)最后对N info进行量化，确定传输块大小(Transport Block Size，TBS)。
对于使用寻呼无线网络临时标识(Paging-Radio Network Temporary Identifier，P-RNTI)、随机接入无线网络临时标识(Random Access-Radio Network Temporary Identifier，RA-RNTI)或MsgB无线网络临时标识(MsgB-Radio Network Temporary Identifier，MsgB-RNTI)加扰CRC的DCI 1_0调度的PDSCH，在确定TBS时对步骤(2)进行修改，将缩放N info＝S·N RE·R·Q m·v应用到N info的计算过程，其中缩放因子S基于DCI 1_0中的传输块缩放(TB scaling)域指示确定。
应用TBS缩放后，在用于PDSCH传输的总时频资源数不变的条件下有效减少TBS，从而提升覆盖性能。
然而，相关技术方案支持对使用P-RNTI、RA-RNTI或MsgB-RNTI加扰CRC的DCI 1_0调度的PDSCH进行TBS缩放，且最多将TBS缩放为原来的1/4，对系统覆盖性能的提升有限。另外，对于覆盖性能受限的通信场景，例如NTN系统，当前支持的TBS缩放因子可能无法满足覆盖要求。此外，使用其他RNTI加扰CRC的DCI 1_0调度的PDSCH不支持TBS缩放方案，例如Msg4PDSCH。因此，需要对现有PDSCH的TBS缩放方案进行增强，从而提升覆盖性能。
为便于理解本申请实施例的技术方案，以下通过具体实施例详述本申请的技术方案。以上相关技术作为可选方案与本申请实施例的技术方案可以进行任意结合，其均属于本申请实施例的保护范围。本申请实施例包括以下内容中的至少部分内容。
图6为本申请实施例提供的一种通信方法的流程示意图，如图6所示，该方法包括：
S601、终端设备接收系统消息(System Information，SI)，其中，所述系统消息携带第一指示信息。
S602、所述终端设备接收用于调度物理下行共享信道PDSCH的下行控制信息DCI。
S603、根据所述第一指示信息和/或所述DCI，所述终端设备接收传输块大小TBS缩放的所述PDSCH。
在本申请的另一些实施例中，S601可以替换为：终端设备接收广播消息，所述广播消息携带第一指示信息。
在本申请的又一些实施例中，S601可以替换为：终端设备接收第一指示信息。在这种情况下，第一指示信息可以为广播消息、组播消息或单播消息。例如，第一指示信息可以是终端设备与网络设备在连接时，网络设备向终端设备发送的指示信息。
图7为本申请实施例提供的另一种通信方法的流程示意图，如图7所示，该方法包括：
S701、网络设备发送系统消息，其中，所述系统消息携带第一指示信息。
S702、所述网络设备发送用于调度物理下行共享信道PDSCH的下行控制信息DCI；其中，所述第一指示信息和/或所述DCI，用于终端设备接收传输块大小TBS缩放的所述PDSCH。
在本申请的另一些实施例中，S701可以替换为：网络设备发送广播消息，其中，所述广播消息携带第一指示信息。
在本申请的又一些实施例中，S701可以替换为：网络设备发送第一指示信息。在这种情况下，第一指示信息可以为广播消息、组播消息或单播消息。例如，第一指示信息可以是终端设备与网络设备在连接时，网络设备向终端设备发送的指示信息。
在一些实施例中，系统消息中的主信息块(Master Information Block，MIB)或系统信息块(System Information Block，SIB)携带第一指示信息。
可选地，所述网络设备可以根据所述第一指示信息和/或所述DCI，发送TBS缩放的所述PDSCH。例如，所述网络设备可以根据所述第一指示信息和/或所述DCI，对PDSCH的TBS缩放，并发送TBS缩放的所述PDSCH。
可选地，终端设备接收系统消息，可以包括：终端设备接收网络设备发送的系统消息。可选地，网络设备发送系统消息，可以包括：网络设备向终端设备发送/广播系统消息。
可选地，第一指示信息可以为显示指示信息或隐式指示信息。在第一指示信息可以为显示指示信息的情况下，第一指示信息包括一个或多个比特，多个比特可以连续或不连续或至少部分连续，该一个或多个比特用于指示信息。在第一指示信息为隐式指示信息的情况下，第一指示信息对应系统消息中的目标域或目标字段，所述目标域或所述目标字段用于配置与第一指示信息相关信息。
可选地，第一指示信息可以为本申请之前的协议中的指示信息，或者第一指示信息可以为本申请之后的协议中规定的指示信息。可选地，可以将本申请之前的协议中的一个或多个预留比特设置为目标值，第一指示信息可以为目标值。
可选地，终端设备可以根据所述第一指示信息，接收TBS缩放的所述PDSCH。可选地，终端设备可以根据所述DCI，接收TBS缩放的所述PDSCH。可选地，终端设备可以根据所述第一指示信息和所述DCI，接收TBS缩放的所述PDSCH。
可选地，本申请任一实施例中的TBS缩放的所述PDSCH，可以与TBS缩放后的所述PDSCH同一理解。可选地，终端设备接收TBS缩放的所述PDSCH，可以包括：终端设备确定缩放的TBS，根据缩放的TBS，接收TBS缩放的所述PDSCH。
可选地，终端设备确定缩放的TBS的方法，可以通过上述步骤(1)至(3)确定。
可选地，终端设备可以根据第一指示信息指示的一个或者多个TBS的缩放因子中的一个TBS的缩放因子，接收TBS缩放的所述PDSCH。可选地，终端设备可以根据DCI指示的一个或者多个TBS的缩放因子中的一个TBS的缩放因子，接收TBS缩放的所述PDSCH。可选地，终端设备可以根据第一指示信息指示的一个或者多个TBS的缩放因子中的一个TBS的缩放因子，以及DCI指示的一个或者多个TBS的缩放因子中的一个TBS的缩放因子，接收TBS缩放的所述PDSCH。
可选地，终端设备可以在第一指示信息不用于指示所述PDSCH的一个或者多个TBS的缩放因子的情况下，或者，在第一指示信息指示所述PDSCH的一个或者多个TBS的缩放因子不满足需要的情况下，或者，在所述DCI包括的第一TB缩放域，指示的所述PDSCH的一个或者多个TBS的缩放因子不满足需要的情况下，或者，在所述DCI包括的第一TB缩放域指示无效值的情况下，或者，在所述DCI不包括第一TB缩放域的情况下，终端设备可以根据协议约定的目标缩放因子，或者预配置的目标缩放因子，或者缺省的目标缩放因子，接收TBS缩放的所述PDSCH。可选地，进一步，如果DCI指示第二缩放因子，则终端设备可以根据目标缩放因子和DCI指示的所述第二缩放因子，接收TBS缩放的所述PDSCH。可选地，目标缩放因子可以是下述的第四缩放因子或者第八缩放因子。
在本申请实施例中，终端设备接收系统消息，其中，所述系统消息携带第一指示信息；所述终端设备接收用于调度物理下行共享信道PDSCH的下行控制信息DCI；根据所述第一指示信息和/或所述DCI，所述终端设备接收传输块大小TBS缩放的所述PDSCH。这样，终端设备可以根据所述第一指示信息和/或所述DCI，接收传输块大小TBS缩放的所述PDSCH，从而能够准确接收到TBS缩放的所述PDSCH。
在一些实施例中，所述第一指示信息用于指示所述PDSCH的一个或者多个TBS的缩放因子。在另一些实施例中，所述第一指示信息不用于指示所述PDSCH的一个或者多个TBS的缩放因子。
可选地，第一指示信息可以用于指示PDSCH的一个TBS的缩放因子。可选地，第一指示信息可以用于指示PDSCH的多个TBS的缩放因子。示例性地，第一指示信息可以携带一个TBS的缩放因子，或者第一指示信息可以携带多个TBS的缩放因子。又示例性地，第一指示信息可以指示：协议约定/终端设备预先配置的TBS缩放因子集合中的一个TBS的缩放因子，或者第一指示信息可以指示：协议约定/终端设备预先配置的TBS缩放因子集合中的多个TBS的缩放因子。可选地，TBS缩放因子集合可以包括至少一个TBS的缩放因子。TBS缩放因子集合可以是本申请之前的协议(即现有协议)约定的集合，或者可以是本申请之后的协议(即本申请之后的协议)约定的集合。本申请之前的协议约定的集合中的TBS的缩放因子，与本申请之后的协议约定的集合中的TBS的缩放因子至少部分不同。
在本申请任一实施例中，TBS的缩放因子，也可以称为：缩放因子、TBS缩放因子或TBS对应的缩放因子。
可选地，一个或多个TBS的缩放因子中的每个TBS的缩放因子可以用于PDSCH的TBS缩放。
可选地，第一指示信息指示的一个或多个TBS的缩放因子，可以为NTN系统中的TBS的缩放因子。可选地，第一指示信息指示的一个或多个TBS的缩放因子，可以为NR系统中的TBS的缩放因子。
可选地，第一指示信息指示的一个或多个TBS的缩放因子可以是现有协议(即本申请之前的协议) 规定的，或者可以是未来协议(即本申请之后的协议)规定的，或者，可以是网络设备配置的，或者，可以是终端设备预配置的。
可选地，终端设备/网络设备可以根据参考信号的测量值和/或终端设备是否具有接收TBS缩放的PDSCH能力，使用或不使用第一指示信息指示的一个或多个TBS的缩放因子中一个TBS的缩放因子。可选地，在使用时，终端设备/网络设备还可以根据参考信号的测量值和/或终端设备是否具有接收TBS缩放的PDSCH能力，确定使用一个或多个TBS的缩放因子中的哪个TBS的缩放因子。例如，在参考信号的测量值大于第一阈值的情况下(表明信道质量较高)，和/或，在终端设备不具备接收TBS缩放的PDSCH能力，或者终端设备不具备使用第一指示信息指示的一个或多个TBS的缩放因子的能力的情况下，终端设备可以不使用第一指示信息指示的一个或多个TBS的缩放因子中的任一个TBS的缩放因子。进一步，可选地，终端设备可以使用所述用于调度PDSCH的DCI指示的现有协议中的TBS缩放因子。又例如，在参考信号的测量值小于或等于第一阈值的情况下(表明信道质量较低)，并且在终端设备具备接收TBS缩放的PDSCH能力，或者终端设备具备使用第一指示信息指示的一个或多个TBS的缩放因子的能力的情况下，终端设备可以使用第一指示信息指示的一个或多个TBS的缩放因子中的一个TBS的缩放因子。进一步，可选地，终端设备还可以联合使用或可以不使用所述用于调度PDSCH的DCI指示的现有协议中的TBS缩放因子。可选地，在信道质量较高的情况下，用于接收TBS缩放的PDSCH的缩放因子可以较大，和/或，在信道质量较低的情况下，用于接收TBS缩放的PDSCH的缩放因子可以较小。
可选地，在本申请任一实施例中，终端设备使用TBS缩放因子，可以包括：终端设备基于TBS缩放因子，确定缩放的TBS；可选地，进一步还可以包括：根据缩放的TBS，接收TBS缩放的PDSCH。
可选地，在终端设备不使用第一指示信息指示的一个或多个TBS的缩放因子中的某一个TBS的缩放因子的情况下，终端设备可以使用其它信息指示的一个或多个TBS的缩放因子中的某一个TBS的缩放因子，或者，终端设备可以使用协议约定或预先配置的一个或多个TBS的缩放因子的中某一个TBS的缩放因子。可选地，其它信息可以是网络设备向终端设备发送的。可选地，其它信息与第一指示信息通过不同的信令承载。可选地，其它信息可以是单播信息、广播信息或组播信息。可选地，其它信息可以为用于调度PDSCH的DCI。
可选地，所述第一指示信息不用于指示所述PDSCH的一个或者多个TBS的缩放因子，可以包括：第一指示信息中没有携带一个或多个TBS的缩放因子，或者第一指示信息没有指示：协议约定/终端设备预先配置的TBS缩放因子集合中的一个TBS的缩放因子，或者第一指示信息没有指示：协议约定/终端设备预先配置的TBS缩放因子集合中的多个TBS的缩放因子。
可选地，第一指示信息可以为系统消息中的任一个指示信息。可选地，第一指示信息可以为现有协议中的指示信息或者本申请之后的协议中的指示信息。
可选地，所述第一指示信息不用于指示所述PDSCH的一个或者多个TBS的缩放因子，可以理解为：系统消息中不携带用于指示所述PDSCH的一个或者多个TBS的缩放因子的信息。
在一些实施例中，所述DCI包括第一TB缩放域，其中，所述第一TB缩放域用于指示所述PDSCH的一个或者多个TBS的缩放因子。
在另一些实施例中，所述DCI包括第一TB缩放域，其中，所述第一TB缩放域用于指示无效值，所述无效值为无效的TBS的缩放因子或者为空。可选地，无效的TBS的缩放因子可以表示该缩放因子不能进行TBS缩放。例如，无效的TBS的缩放因子可以为-1、2或其它值等。
在又一些实施例中，所述DCI不包括第一TB缩放域。
在一些实施例中，所述根据所述第一指示信息和/或所述DCI，所述终端设备接收传输块大小TBS缩放的所述PDSCH，包括：
根据所述第一指示信息、参考信号的测量值、终端设备有接收TBS缩放的PDSCH能力中的至少之一，所述终端设备发送第二指示信息；所述第二指示信息用于请求物理下行共享信道PDSCH的传输块大小TBS缩放，或者所述第二指示信息用于请求新的TBS缩放因子；
所述终端设备接收第三指示信息；
根据所述第三指示信息和/或所述DCI，所述终端设备接收TBS缩放的所述PDSCH。
这样，对于网络设备侧来说，所述网络设备接收第二指示信息；所述第二指示信息用于请求物理下行共享信道PDSCH的传输块大小TBS缩放，或者所述第二指示信息用于请求新的TBS缩放因子；
所述网络设备发送第三指示信息；
其中，所述第三指示信息和/或所述DCI，用于终端设备接收传输块大小TBS缩放的所述PDSCH。
在另一些实施例中，所述根据所述第一指示信息和/或所述DCI，所述终端设备接收传输块大小TBS缩放的所述PDSCH，包括：根据所述第一指示信息、参考信号的测量值、终端设备有接收TBS缩放的 PDSCH能力中的至少之一，所述终端设备发送第二指示信息；
其中，所述第二指示信息对应所述第一指示信息指示的所述PDSCH的一个或者多个TBS的缩放因子；和/或，
所述第二指示信息对应协议约定或预先配置的所述PDSCH的一个或者多个TBS的缩放因子；和/或，
所述第二指示信息对应DCI指示所述PDSCH的一个或者多个TBS的缩放因子。
在这种情况下，终端设备可以根据第二指示信息对应的缩放因子，接收TBS缩放的所述PDSCH。例如，如果所述第二指示信息对应所述第一指示信息指示的所述PDSCH的一个或者多个TBS的缩放因子，则终端设备可以根据第一指示信息指示的所述PDSCH的一个或者多个TBS的缩放因子中的一个TBS的缩放因子，接收TBS缩放的所述PDSCH。又例如，如果所述所述第二指示信息对应所述第一指示信息指示的所述PDSCH的一个或者多个TBS的缩放因子，以及对应DCI指示所述PDSCH的一个或者多个TBS的缩放因子，则终端设备可以根据第一指示信息指示的所述PDSCH的一个或者多个TBS的缩放因子中的一个TBS的缩放因子，以及DCI指示所述PDSCH的一个或者多个TBS的缩放因子中的一个TBS的缩放因子，接收TBS缩放的所述PDSCH。
可选地，协议约定或预先配置的一个或者多个TBS的缩放因子，可以包括下述的第四缩放因子，或者可以包括下述的包括一个或者多个缩放因子的第二集合。
可选地，在所述第二指示信息对应所述第一指示信息指示的所述PDSCH的一个或者多个TBS的缩放因子的情况下，终端设备通过第二指示信息向网络设备指示：使用第一指示信息指示的所述PDSCH的一个或者多个TBS的缩放因子中的一个TBS的缩放因子，或者说，终端设备通过第二指示信息向网络设备指示：根据第一指示信息指示的所述PDSCH的一个或者多个TBS的缩放因子中的一个TBS的缩放因子，接收TBS缩放的所述PDSCH。
可选地，在所述第二指示信息对应协议约定或预先配置的所述PDSCH的一个或者多个TBS的缩放因子的情况下，终端设备通过第二指示信息向网络设备指示使用协议约定或预先配置的所述PDSCH的一个或者多个TBS的缩放因子中的一个TBS的缩放因子，或者说，终端设备通过第二指示信息向网络设备指示：根据协议约定或预先配置的所述PDSCH的一个或者多个TBS的缩放因子中的一个TBS的缩放因子，接收TBS缩放的所述PDSCH。
在所述第二指示信息对应DCI指示所述PDSCH的一个或者多个TBS的缩放因子的情况下，终端设备通过第二指示信息向网络设备指示使用DCI指示所述PDSCH的一个或者多个TBS的缩放因子中的一个TBS的缩放因子，或者说，终端设备通过第二指示信息向网络设备指示：根据DCI指示所述PDSCH的一个或者多个TBS的缩放因子中的一个TBS的缩放因子，接收TBS缩放的所述PDSCH。
可选地，根据所述第一指示信息，所述终端设备发送第二指示信息，可以包括：在所述第一指示信息不用于指示所述PDSCH的一个或者多个TBS的缩放因子的情况下，所述终端设备发送第二指示信息。可选地，根据所述第一指示信息，所述终端设备发送第二指示信息，可以包括：在所述第一指示信息用于指示所述PDSCH的一个或者多个TBS的缩放因子，且所述终端设备不能使用该一个或者多个TBS的缩放因子中的某一个或任一个TBS的缩放因子的情况下，所述终端设备发送第二指示信息。可选地，根据所述第一指示信息，所述终端设备发送第二指示信息，可以包括：在所述第一指示信息用于指示所述PDSCH的一个或者多个TBS的缩放因子，且该一个或者多个TBS的缩放因子不符合要求或者不包括预设TBS的缩放因子的情况下，所述终端设备发送第二指示信息。
可选地，根据参考信号的测量值，所述终端设备发送第二指示信息，可以包括：在参考信号的测量值小于或等于门限值的情况下，所述终端设备发送第二指示信息。
可选地，如果终端设备有接收TBS缩放的PDSCH能力，则终端设备发送第二指示信息。在其它实施例中，如果终端设备没有接收TBS缩放的PDSCH能力，则终端设备不发送第二指示信息。
可选地，在一些实施例中，所述终端设备发送第二指示信息，包括：在终端设备的通信为NTN通信的情况下，所述终端设备发送所述第二指示信息。例如，在终端设备的通信为NTN通信的情况下，终端根据所述第一指示信息、参考信号的测量值小于或等于门限值、所述终端设备有接收TBS缩放的PDSCH能力中的至少之一，发送所述第二指示信息。
可选地，参考信号可以为网络设备向终端设备发送的参考信号。示例性地，参考信号可以包括以下至少之一：同步信号块(Synchronization Signal Block，SSB)、信道状态信息参考信号(Channel State Information-Reference Signal，CSI-RS)。其中，SSB也可以称为同步信号/物理广播信道块(Synchronization Signal/Physical Broadcast Channel Block，SS/PBCH block)。
可选地，测量值可以包括以下至少之一的测量参数值：参考信号接收功率(Reference Signal Received Power，RSRP)、参考信号接收质量(Reference Signal Received Quality，RSRQ)、接收信号强度指示 (Received Signal Strength Indicator，RSSI)、信号与干扰加噪声比(Signal to Interferenceand Noise Ratio，SINR)。
可选地，不同的测量参数值对应的门限值可以相同或不同。可选地，不同参考信号对应的门限值可以相同或不同。
可选地，参考信号的测量值小于或等于门限值，可以表征终端设备确定当前覆盖情况中通信质量较差，所述用于调度PDSCH的DCI所指示的本申请之前的TBS缩放因子会导致误码率高，终端设备接收下行信息的可靠性变低。终端设备可以向网络设备发送第二指示信息，以使网络设备向终端设备发送第三指示信息，以通过第三指示信息指示一个或多个TBS的缩放因子，一个或多个TBS的缩放因子是本申请之后协议规定的TBS缩放因子，一个或多个TBS的缩放因子，不同于本申请之前的TBS缩放因子，从而终端设备能够根据需要，使用与当前通信质量对应的误码率。
可选地，终端设备可以向网络设备上报参考信号的测量值，从而网络设备可以向终端设备指示与参考信号的测量值对应的TBS缩放因子。可选地，终端设备可以向网络设备上报参考信号的测量值对应的通信质量等级，从而网络设备可以向终端设备指示与通信质量等级对应的TBS缩放因子。可选地，在所述终端设备有接收TBS缩放的PDSCH能力的情况下，所述终端设备可以接收传输块大小TBS缩放的所述PDSCH。
可选地，第三指示信息可以包括在随机接入过程中的消息中。例如，第三指示信息可以包括在随机接入响应(Random Access Response，RAR)或msg2中。又例如，第三指示信息可以包括在msg4消息中，或者可以包括在msgB消息中。
可选地，第三指示信息可以包括在无线资源控制(Radio Resource Control，RRC)消息、下行控制信息(Downlink Control Information，DCI)或媒体接入控制控制单元(Medium Access Control Control Element，MAC CE)中。
可选地，第三指示信息可以用于指示所述PDSCH的一个或者多个TBS的缩放因子，或者第三指示信息可以不用于指示所述PDSCH的一个或者多个TBS的缩放因子。
可选地，终端设备可以根据第三指示信息指示的一个或者多个TBS的缩放因子中的一个TBS的缩放因子，接收TBS缩放的所述PDSCH。可选地，终端设备可以根据DCI指示的一个或者多个TBS的缩放因子中的一个TBS的缩放因子，接收TBS缩放的所述PDSCH。可选地，终端设备可以根据第三指示信息指示的一个或者多个TBS的缩放因子中的一个TBS的缩放因子，以及DCI指示的一个或者多个TBS的缩放因子中的一个TBS的缩放因子，接收TBS缩放的所述PDSCH。
可选地，终端设备可以在第三指示信息不用于指示所述PDSCH的一个或者多个TBS的缩放因子的情况下，或者，在第三指示信息指示所述PDSCH的一个或者多个TBS的缩放因子不满足需要的情况下，或者，在所述DCI包括的第一TB缩放域，指示的所述PDSCH的一个或者多个TBS的缩放因子不满足需要的情况下，或者，在所述DCI包括的第一TB缩放域，指示无效值的情况下，或者，在所述DCI不包括第一TB缩放域的情况下，终端设备可以根据协议约定的目标缩放因子，或者预配置的目标缩放因子，或者缺省的目标缩放因子，接收TBS缩放的所述PDSCH。可选地，进一步，如果DCI指示第二缩放因子，则终端设备可以根据目标缩放因子和DCI指示的所述第二缩放因子，接收TBS缩放的所述PDSCH。可选地，目标缩放因子可以是下述的第四缩放因子或者第八缩放因子。
在一些实施例中，根据所述第一指示信息，所述终端设备接收TBS缩放的所述PDSCH，包括：所述终端设备根据所述第一指示信息或第三指示信息指示的第一缩放因子，接收TBS缩放的所述PDSCH。
这样，对于网络设备侧来说，所述第一指示信息或第三指示信息指示第一缩放因子；所述第一缩放因子用于所述终端设备接收TBS缩放的所述PDSCH。
可选地，第一指示信息或第三指示信息可以包括第一TBS缩放因子。可选地，第一指示信息或第三指示信息可以包括目标域或者一个或多个比特，目标域或者一个或多个比特用于指示一个或多个TBS的缩放因子中的第一TBS缩放因子。可选地，第一指示信息或第三指示信息指示的第一TBS缩放因子所在的一个或多个TBS的缩放因子，可以是以下至少之一：本申请之前协议规定的一个或多个TBS的缩放因子、本申请之后协议规定的一个或多个TBS的缩放因子、第一指示信息或第三指示信息中包括的一个或多个TBS的缩放因子，终端设备预先配置的一个或多个TBS的缩放因子。
在一些实施例中，根据所述DCI，所述终端设备接收TBS缩放的所述PDSCH，包括：所述终端设备根据所述DCI指示的第二缩放因子，接收TBS缩放的所述PDSCH。
这样，对于网络设备侧来说，所述DCI指示第二缩放因子；所述第二缩放因子用于所述终端设备接收TBS缩放的所述PDSCH。
可选地，DCI中可以包括以下至少之一：第一TB缩放域、MCS域、预留比特、第二TB缩放域。其中，DCI指示的第二缩放因子，可以是DCI中的以下至少之一指示的第二缩放因子：第一TB缩放域、 MCS域、预留比特、第二TB缩放域。
可选地，DCI指示的第二缩放因子所在的一个或多个TBS的缩放因子，可以是以下至少之一：本申请之前协议规定的一个或多个TBS的缩放因子、本申请之后协议规定的一个或多个TBS的缩放因子、第一指示信息或第三指示信息中包括的一个或多个TBS的缩放因子，终端设备预先配置的一个或多个TBS的缩放因子。
在一些实施例中，所述根据所述第一指示信息和/或所述DCI，所述终端设备接收TBS缩放的所述PDSCH，包括：所述终端设备根据所述第一指示信息或第三指示信息指示的第一缩放因子，和所述DCI指示的第二缩放因子，接收TBS缩放的所述PDSCH。
这样，对于网络设备侧来说，所述第一指示信息或第三指示信息指示第一缩放因子，所述DCI中携带第二缩放因子；所述第一缩放因子和所述第二缩放因子，用于所述终端设备接收TBS缩放的所述PDSCH。
可选地，第二TBS缩放因子可以通过所述用于调度PDSCH的DCI中的第一TB缩放域指示。可选地，第二TBS缩放因子可以通过所述用于调度PDSCH的DCI中的其它指示域指示。可选地，第二TBS缩放因子可以包括在以下至少之一中：本申请之前协议规定的一个或多个TBS的缩放因子、本申请之后协议规定的一个或多个TBS的缩放因子、第一指示信息或第三指示信息指示的一个或多个TBS的缩放因子，终端设备预先配置的一个或多个TBS的缩放因子。例如，第二TBS缩放因子可以包括在本申请之前协议规定的一个或多个TBS的缩放因子中。
本申请任一实施例中的其它指示域可以为：现有的其它指示域或利用保留比特新增/新定义的指示域。例如，现有的其它指示域可以为下文描述的MCS域，或者，现有的其它指示域可以为下文描述的一个或多个保留比特。可选地，可以利用该一个或多个保留比特定义一个新增/新定义的指示域。可选地，该一个新增/新定义的指示域可以为下文描述的第二TB缩放域。
可选地，第三TBS缩放因子可以小于第一TBS缩放因子，或者，第三TBS缩放因子可以大于第一TBS缩放因子。可选地，第三TBS缩放因子可以小于第二TBS缩放因子，或者，第三TBS缩放因子可以大于第二TBS缩放因子。
在一些实施例中，所述终端设备根据所述第一指示信息或第三指示信息指示的第一缩放因子，和所述DCI指示的第二缩放因子，接收TBS缩放的所述PDSCH，包括：所述终端设备根据所述第一指示信息或第三指示信息指示的第一缩放因子，和所述DCI指示的第二缩放因子的乘积，确定第三缩放因子；所述终端设备根据所述第三缩放因子，接收TBS缩放的所述PDSCH。
这样，所述第三TBS缩放因子是基于所述第一TBS缩放因子和所述第二TBS缩放因子的乘积确定的。例如，所述第三TBS缩放因子是所述第一TBS缩放因子和所述第二TBS缩放因子的乘积。以下说明其它确定第三TBS缩放因子的方式：在另一些实施例中，所述第三TBS缩放因子是基于所述第一TBS缩放因子和所述第二TBS缩放因子的和确定的。例如，所述第三TBS缩放因子是所述第一TBS缩放因子和所述第二TBS缩放因子之和。在又一些实施例中，所述第三TBS缩放因子是基于所述第一TBS缩放因子和所述第二TBS缩放因子的差值的绝对值确定的。例如，所述第三TBS缩放因子是所述第一TBS缩放因子和所述第二TBS缩放因子的差值的绝对值。在又一些实施例中，所述第三TBS缩放因子是基于所述第一TBS缩放因子和所述第二TBS缩放因子中，较小的TBS缩放因子除以较大的TBS缩放因子的结果确定的。例如，述第三TBS缩放因子是所述第一TBS缩放因子和所述第二TBS缩放因子中，较小的TBS缩放因子除以较大的TBS缩放因子的结果。在又一些实施例中，所述第三TBS缩放因子是所述第一TBS缩放因子和第二TBS缩放因子中的较大的TBS缩放因子。在又一些实施例中，所述第三TBS缩放因子是所述第一TBS缩放因子和第二TBS缩放因子中的较小的TBS缩放因子。
在一些实施例中，所述终端设备接收TBS缩放的所述PDSCH，包括：所述终端设备根据第四缩放因子，接收TBS缩放的所述PDSCH；其中，所述第四缩放因子是取值范围为大于0且小于或等于1的正数。
这样，对于网络设备侧来说，所述第一指示信息和/或所述DCI，用于所述终端设备根据第四缩放因子，接收TBS缩放的所述PDSCH；其中，所述第四缩放因子是取值范围为大于0且小于或等于1的正数。
可选地，终端设备在第一指示信息和/或所述DCI指示的TBS的缩放因子不符合要求，或者，第一指示信息不指示一个或者多个TBS的缩放因子，或者，所述DCI包括的第一TB缩放域用于指示无效值，或者，所述DCI不包括第一TB缩放域的情况下，所述终端设备根据第四缩放因子，接收TBS缩放的所述PDSCH。
可选地，所述第四TBS缩放因子是协议约定的，或者，所述第四TBS缩放因子是终端设备根据预配置确定的，或者，所述第四TBS缩放因子为缺省值。
可选地，在所述第一指示信息或第三指示信息不用于指示所述PDSCH的一个或者多个TBS的缩放因子的情况下，无论所述用于调度PDSCH的DCI是否能够指示第二TBS缩放因子，则终端设备根据第四缩放因子，接收TBS缩放的所述PDSCH。
可选地，第四TBS缩放因子的值，可以与第一TBS缩放因子的值相同或不同。可选地，第四TBS缩放因子的值，可以与第二TBS缩放因子的值不同或相同。
在一些实施例中，所述终端设备根据第四缩放因子，接收TBS缩放的所述PDSCH，包括：
所述终端设备根据所述第四缩放因子和所述DCI指示的第二缩放因子，确定第五缩放因子；
所述终端设备根据所述第五缩放因子，接收TBS缩放的所述PDSCH。
这样，对于网络设备侧来说，所述第一指示信息和/或所述DCI，用于所述终端设备根据所述第四缩放因子和所述DCI指示的第二缩放因子，接收TBS缩放的所述PDSCH。
可选地，终端设备在第一指示信息和/或所述DCI指示的TBS的缩放因子不符合要求，或者，第一指示信息不指示一个或者多个TBS的缩放因子，或者，所述DCI包括的第一TB缩放域用于指示无效值，或者，所述DCI不包括第一TB缩放域的情况下，所述终端设备根据第五缩放因子，接收TBS缩放的所述PDSCH。
可选地，在所述第一指示信息或第三指示信息不用于指示所述PDSCH的一个或者多个TBS的缩放因子的情况下，无论所述用于调度PDSCH的DCI是否能够指示第二TBS缩放因子，则终端设备根据第五缩放因子，接收TBS缩放的所述PDSCH。
可选地，第五TBS缩放因子可以小于第四TBS缩放因子，或者，第五TBS缩放因子可以大于第四TBS缩放因子。可选地，第五TBS缩放因子可以小于第二TBS缩放因子，或者，第五TBS缩放因子可以大于第二TBS缩放因子。
在一些实施例中，所述终端设备根据所述第四缩放因子和所述DCI指示的第二缩放因子，确定第五缩放因子，包括：所述终端设备根据所述第四缩放因子和所述DCI指示的所述第二缩放因子的乘积，确定所述第五缩放因子。
这样，所述第五TBS缩放因子是基于所述第四TBS缩放因子和所述第二TBS缩放因子的乘积确定的。例如，所述第五TBS缩放因子是所述第四TBS缩放因子和所述第二TBS缩放因子的乘积。以下说明其它确定第五TBS缩放因子的方式：在另一些实施例中，所述第五TBS缩放因子是基于所述第四TBS缩放因子和所述第二TBS缩放因子的和确定的。例如，所述第五TBS缩放因子是所述第四TBS缩放因子和所述第二TBS缩放因子的和。在又一些实施例中，所述第五TBS缩放因子是基于所述第四TBS缩放因子和所述第二TBS缩放因子的差值的绝对值确定的。例如，所述第五TBS缩放因子是所述第四TBS缩放因子和所述第二TBS缩放因子的差值的绝对值。在又一些实施例中，所述第五TBS缩放因子是基于所述第四TBS缩放因子和所述第二TBS缩放因子中，较小的TBS缩放因子除以较大的TBS缩放因子的结果确定的。例如，所述第五TBS缩放因子是所述第四TBS缩放因子和所述第二TBS缩放因子中，较小的TBS缩放因子除以较大的TBS缩放因子的结果。在又一些实施例中，所述第五TBS缩放因子是所述第四TBS缩放因子和第二TBS缩放因子中的较大的TBS缩放因子。在又一些实施例中，所述第五TBS缩放因子是所述第四TBS缩放因子和第二TBS缩放因子中的较小的TBS缩放因子。
在一些实施例中，根据所述第一指示信息，所述终端设备接收TBS缩放的所述PDSCH，包括：
所述终端设备根据所述第一指示信息或第三指示信息指示的包括一个或者多个缩放因子的第一集合，确定第六缩放因子；
所述终端设备根据所述第六缩放因子，接收TBS缩放的所述PDSCH。
这样，对于网络设备侧来说，所述第一指示信息或第三指示信息指示包括一个或者多个缩放因子的第一集合；所述第一集合用于所述终端设备确定第六缩放因子，根据所述第六缩放因子，接收TBS缩放的所述PDSCH。
在这种情况下，终端设备接收TBS缩放的所述PDSCH所根据的第六TBS缩放因子，是根据网络设备通过第一指示信息或第三指示信息指示的第一集合中的一个或多个TBS的缩放因子中确定的。
可选地，第一集合可以包括一个TBS的缩放因子，或者，第一集合可以包括多个TBS的缩放因子。可选地，在一些实施例中，第一指示信息可以包括第一集合中的多个TBS的缩放因子，例如，第一指示信息可以包括TBS缩放因子1、0.5以及0.125等。可选地，在另一些实施例中，第一集合可以包括第一集合中一个或多个TBS的缩放因子指示信息，从而终端设备可以基于一个或多个TBS的缩放因子指示信息，确定对应的一个或多个TBS的缩放因子。例如，协议可以约定至少一个TBS的缩放因子，或者终端设备可以预先配置至少一个TBS的缩放因子，终端设备可以基于一个或多个TBS的缩放因子指示信息，从至少一个TBS的缩放因子中，确定对应的一个或多个TBS的缩放因子。示例性地，至少一个TBS的缩放因子包括1、0.5以及0.125，多个TBS的缩放因子指示信息为00、01以及10的情况 下，从而终端设备确定对应的多个TBS的缩放因子分别为1、0.5以及0.125。又示例性地，至少一个TBS的缩放因子包括1、0.5以及0.125，多个TBS的缩放因子指示信息为10的情况下，由于小于或等于10的指示信息为00、01以及10，从而终端设备确定对应的多个TBS的缩放因子分别为1、0.5以及0.125。
可选地，终端设备可以根据协议约定、预配置或网络设备的指示，从第一集合中的一个或多个TBS的缩放因子中，确定第六TBS缩放因子。
可选地，如果第一指示信息指示包括多个TBS的缩放因子的第一集合，在一种实施例中，终端设备可以根据所述用于调度PDSCH的DCI中的第一TB缩放域的指示，从第一集合中包括的多个TBS的缩放因子中确定第六TBS缩放因子，在另一些实施例中，终端设备可以所述用于调度PDSCH的DCI中的其它指示域的指示，从第一集合中包括的多个TBS的缩放因子中确定第六TBS缩放因子。
在一些实施例中，所述终端设备根据所述第六缩放因子，接收TBS缩放的所述PDSCH，包括：所述终端设备根据所述第六缩放因子和所述DCI指示的第二缩放因子，确定第七缩放因子；所述终端设备根据所述第七缩放因子，接收TBS缩放的所述PDSCH。
这样，对于网络设备侧来说，所述第一集合用于所述终端设备确定所述第六缩放因子，根据所述第六缩放因子和所述DCI指示的第二缩放因子，接收TBS缩放的所述PDSCH。
可选地，第七TBS缩放因子可以小于第六TBS缩放因子，或者，第七TBS缩放因子可以大于第六TBS缩放因子。可选地，第七TBS缩放因子可以小于第二TBS缩放因子，或者，第七TBS缩放因子可以大于第二TBS缩放因子。
可选地，所述终端设备根据所述第六缩放因子和所述DCI指示的第二缩放因子，确定第七缩放因子，包括：所述终端设备根据所述第六缩放因子和所述DCI指示的所述第二缩放因子的乘积，确定所述第七缩放因子。这样，对于网络设备侧来说，所述第一集合用于所述终端设备确定所述第六缩放因子，根据所述第六缩放因子和所述DCI指示的第二缩放因子的乘积，接收TBS缩放的所述PDSCH。
这样，所述第七TBS缩放因子是基于所述第六TBS缩放因子和所述第二TBS缩放因子的乘积确定的。例如，所述第七TBS缩放因子是所述第六TBS缩放因子和所述第二TBS缩放因子的乘积。以下说明其它确定第七TBS缩放因子的方式：可选地，所述第七TBS缩放因子是基于所述第六TBS缩放因子和所述第二TBS缩放因子的和确定的。例如，所述第七TBS缩放因子是所述第六TBS缩放因子和所述第二TBS缩放因子的和。可选地，所述第七TBS缩放因子是基于所述第六TBS缩放因子和所述第二TBS缩放因子的差值的绝对值确定的。例如，所述第七TBS缩放因子是所述第六TBS缩放因子和所述第二TBS缩放因子的差值的绝对值。可选地，所述第七TBS缩放因子是基于所述第六TBS缩放因子和所述第二TBS缩放因子中，较小的TBS缩放因子除以较大的TBS缩放因子的结果确定的。例如，所述第七TBS缩放因子是所述第六TBS缩放因子和所述第二TBS缩放因子中，较小的TBS缩放因子除以较大的TBS缩放因子的结果。可选地，所述第七TBS缩放因子是所述第六TBS缩放因子和第二TBS缩放因子中的较大的TBS缩放因子。可选地，所述第七TBS缩放因子是所述第六TBS缩放因子和第二TBS缩放因子中的较小的TBS缩放因子。
可选地，第六TBS缩放因子和第二TBS缩放因子，均可以是所述用于调度PDSCH的DCI指示的。可选地，所述用于调度PDSCH的DCI的指示为00，则第六TBS缩放因子为第一集合包括的一个或多个TBS的缩放因子中的第一个TBS缩放因子，第二TBS缩放因子为现有协议规定的多个TBS的缩放因子中的第一个TBS缩放因子。
在一些实施例中，所述终端设备接收传输块大小TBS缩放的所述PDSCH，包括：所述终端设备根据包括一个或者多个缩放因子的第二集合，确定第八缩放因子，其中，所述第二集合是协议约定的，或者，所述第二集合是终端设备根据预配置确定的，或者，所述第二集合为缺省值集合；所述终端设备根据所述第八缩放因子，接收TBS缩放的所述PDSCH。
这样，对于网络设备侧来说，所述第一指示信息和/或所述DCI，用于所述终端设备根据包括一个或者多个缩放因子的第二集合，确定第八缩放因子，根据所述第八缩放因子，接收TBS缩放的所述PDSCH；其中，所述第二集合是协议约定的，或者，所述第二集合是终端设备根据预配置确定的，或者，所述第二集合为缺省值集合。
可选地，终端设备在第一指示信息和/或所述DCI指示的TBS的缩放因子不符合要求，或者，第一指示信息不指示一个或者多个TBS的缩放因子，或者，所述DCI包括的第一TB缩放域用于指示无效值，或者，所述DCI不包括第一TB缩放域的情况下，所述终端设备根据包括一个或者多个缩放因子的第二集合，确定第八缩放因子，进而所述终端设备根据第八缩放因子，接收TBS缩放的所述PDSCH。
例如，终端设备在第一指示信息指示的TBS的缩放因子不符合要求，或者，第一指示信息不指示一个或者多个TBS的缩放因子的情况下，无论所述用于调度PDSCH的DCI指示是否能够指示第二TBS 缩放因子，所述终端设备根据包括一个或者多个缩放因子的第二集合，确定第八缩放因子，进而所述终端设备根据第八缩放因子，接收TBS缩放的所述PDSCH。
在这种情况下，终端设备使用的第八TBS缩放因子，可以不是根据网络设备的指示确定，而是根据协议约定的或预配置的第二集合中的一个或多个TBS的缩放因子确定。在另一些实施例中，包括一个或者多个缩放因子的第二集合，可以是网络设备向终端设备指示的。
可选地，第二集合可以包括一个或多个TBS的缩放因子。例如，第一指示信息或第三指示信息可以包括第二集合，第二集合中的TBS缩放因子分别为1、0.5以及0.125。又例如，第一指示信息或第三指示信息包括TBS缩放因子指示信息，TBS缩放因子指示信息包括00、01以及10，终端设备根据TBS缩放因子指示信息，确定第二集合中的TBS缩放因子分别为1、0.5以及0.125。
可选地，在一种实施例中，终端设备可以根据所述用于调度PDSCH的DCI中的第一TB缩放域的指示，从第二集合中包括的多个TBS的缩放因子中确定第八TBS缩放因子，在另一些实施例中，终端设备可以所述用于调度PDSCH的DCI中的其它指示域的指示，从第二集合中包括的多个TBS的缩放因子中确定第八TBS缩放因子。
在一些实施例中，所述终端设备根据所述第八缩放因子，接收TBS缩放的所述PDSCH，包括：
所述终端设备根据所述第八缩放因子和所述DCI指示的第二缩放因子，确定第九缩放因子；
所述终端设备根据所述第九缩放因子，接收TBS缩放的所述PDSCH。
这样，对于网络设备侧来说，所述第一指示信息和/或所述DCI，用于所述终端设备根据包括一个或者多个缩放因子的第二集合，确定第八缩放因子，根据所述第八缩放因子和所述DCI指示的第二缩放因子，接收TBS缩放的所述PDSCH。
在一些实施例中，所述终端设备根据所述第八缩放因子和所述DCI指示的第二缩放因子，确定第九缩放因子，包括：所述终端设备根据所述第八缩放因子和所述DCI指示的所述第二缩放因子的乘积，确定所述第九缩放因子。
这样，所述第九TBS缩放因子是基于所述第八TBS缩放因子和所述第二TBS缩放因子的乘积确定的。例如，所述第九TBS缩放因子所述第八TBS缩放因子和所述第二TBS缩放因子的乘积。以下说明其它确定第九TBS缩放因子的方式：可选地，所述第九TBS缩放因子是基于所述第八TBS缩放因子和所述第二TBS缩放因子的和确定的。例如，所述第九TBS缩放因子是所述第八TBS缩放因子和所述第二TBS缩放因子的和。可选地，所述第九TBS缩放因子是基于所述第八TBS缩放因子和所述第二TBS缩放因子的差值的绝对值确定的。例如，所述第九TBS缩放因子是所述第八TBS缩放因子和所述第二TBS缩放因子的差值的绝对值。可选地，所述第九TBS缩放因子是基于所述第八TBS缩放因子和所述第二TBS缩放因子中，较小的TBS缩放因子除以较大的TBS缩放因子的结果确定的。例如，所述第九TBS缩放因子是所述第八TBS缩放因子和所述第二TBS缩放因子中，较小的TBS缩放因子除以较大的TBS缩放因子的结果。可选地，所述第九TBS缩放因子是所述第八TBS缩放因子和第二TBS缩放因子中的较大的TBS缩放因子。可选地，所述第九TBS缩放因子是所述第八TBS缩放因子和第二TBS缩放因子中的较小的TBS缩放因子。
可选地，第八TBS缩放因子和第二TBS缩放因子，均可以是所述用于调度PDSCH的DCI(例如，所述用于调度PDSCH的DCI中的第一TB缩放域或其它指示域)指示的。可选地，所述用于调度PDSCH的DCI的指示为10，则第八TBS缩放因子为第二集合包括的多个TBS的缩放因子中的第二个TBS缩放因子，第二TBS缩放因子为现有协议规定的多个TBS的缩放因子中的第二个TBS缩放因子。
可选地，在一些实施例中，在终端设备使用第一指示信息指示的某一个TBS的缩放因子的情况下，该终端设备可以向网络设备发送反馈信息，和/或，在终端设备不使用第一指示信息的任一个TBS的缩放因子的情况下，该终端设备可以不向网络设备发送反馈信息。在另一些实施例中，在终端设备使用第一指示信息指示的某一个TBS的缩放因子的情况下，该终端设备可以不向网络设备发送反馈信息，和/或，在终端设备不使用第一指示信息的任一个TBS的缩放因子的情况下，该终端设备可以向网络设备发送反馈信息。可选地，反馈信息可以包括或不包括终端设备使用的TBS缩放因子。这样，终端设备根据使用第一指示信息指示的一个或多个TBS的缩放因子中的某一个TBS的缩放因子，或者，终端设备根据不使用第一指示信息指示的一个或多个TBS的缩放因子中的任一个TBS的缩放因子，向网络设备发送或不发送反馈信息，从而网络设备可以根据不同终端设备所使用的TBS缩放因子，向不同的终端设备发送相应的TBS缩放因子对应的PDSCH。可选地，在终端设备不使用第一指示信息指示的一个或多个TBS的缩放因子中的任一个TBS的缩放因子的情况下，终端设备可以使用本申请之前协议规定的TBS缩放因子，本申请实施例对此不作赘述。
在可选地一种实施过程中，终端设备可获得第一指示信息指示的一个或多个TBS的缩放因子，以及可获得所述用于调度PDSCH的DCI指示的一个或多个TBS的缩放因子。在一些实施例中，终端设 备可以使用第一指示信息指示的一个或多个TBS的缩放因子中的某一个TBS的缩放因子，可选地，不使用所述用于调度PDSCH的DCI指示的一个或多个TBS的缩放因子中的任一个TBS的缩放因子。在另一些实施例中，终端设备可以使用所述用于调度PDSCH的DCI指示的一个或多个TBS的缩放因子中的某一个TBS的缩放因子，可选地，不使用第一指示信息指示的一个或多个TBS的缩放因子中的任一个TBS的缩放因子。在又一些实施例中，终端设备可以从第一指示信息指示的一个或多个TBS的缩放因子中确定一个TBS的缩放因子A(即上述的第六TBS缩放因子)，从所述用于调度PDSCH的DCI指示的一个或多个TBS的缩放因子中确定一个TBS的缩放因子B(即上述的第二TBS缩放因子)，基于TBS缩放因子A和TBS缩放因子B，确定终端设备使用的缩放因子C(即上述的第七TBS缩放因子)。
在另一些实施例中，第一指示信息可以指示一个或多个TBS的缩放因子，另外，所述用于调度PDSCH的DCI不指示一个或多个TBS的缩放因子。这样，终端设备可获得第一指示信息指示的一个或多个TBS的缩放因子，从而终端设备可以使用第一指示信息指示的一个或多个TBS的缩放因子中的某一个TBS的缩放因子。
在又一些实施例中，不存在所述用于调度PDSCH的DCI之外的信息可以指示一个或多个TBS的缩放因子。这样，终端设备可获得所述用于调度PDSCH的DCI指示的一个或多个TBS的缩放因子，从而终端设备可以使用所述用于调度PDSCH的DCI指示的一个或多个TBS的缩放因子中的某一个TBS的缩放因子。
在一些实施例中，第六TBS缩放因子，是根据所述用于调度PDSCH的DCI指示确定的。在一些实施例中，第八TBS缩放因子，是根据所述用于调度PDSCH的DCI指示确定的。
在实施过程中，由于第一指示信息指示包括多个TBS的缩放因子的第一集合，而终端设备并不知道要从第一集合中的多个TBS的缩放因子中，确定哪个TBS缩放因子作为第六TBS缩放因子，这样通过所述用于调度PDSCH的DCI的指示，从而，终端设备可以从第一集合中的多个TBS的缩放因子中，确定第六TBS缩放因子。
在实施过程中，由于协议预定或终端设备预配置的第二集合包括多个TBS缩的放因子，而终端设备并不知道要从第二集合中的多个TBS的缩放因子中，确定哪个TBS缩放因子作为第八TBS缩放因子，这样通过所述用于调度PDSCH的DCI的指示，从而，终端设备可以从第二集合中的多个TBS的缩放因子中，确定第八TBS缩放因子。
在一些实施例中，第六TBS缩放因子，是根据所述用于调度PDSCH的DCI中的第一TB缩放域指示确定的。在一些实施例中，第八TBS缩放因子，是根据所述用于调度PDSCH的DCI中的第一TB缩放域指示确定的。
可选地，终端设备可以在所述用于调度PDSCH的DCI中存在第一TB缩放域的情况下，根据所述用于调度PDSCH的DCI中的第一TB缩放域指示的值，确定第六TBS缩放因子和/或第八TBS缩放因子。
例如，在第一TB缩放域指示的值为00的情况下，确定将第一集合中的多个TBS的缩放因子中的第一个TBS缩放因子，确定为第六TBS缩放因子。又例如，在第一TB缩放域指示的值为01的情况下，确定将第一集合中的多个TBS的缩放因子中的第二个TBS缩放因子，确定为第六TBS缩放因子。
例如，在第一TB缩放域指示的值为00的情况下，确定将第二集合中的多个TBS的缩放因子中的第一个TBS缩放因子，确定为第八TBS缩放因子。又例如，在第一TB缩放域指示的值为01的情况下，确定将第二集合中的多个TBS的缩放因子中的第二个TBS缩放因子，确定为第八TBS缩放因子。
可选地，所述用于调度PDSCH的DCI中的第一TB缩放域，可以是本申请之前的协议(现有协议)约定的TB缩放域。
在一些实施例中，第六TBS缩放因子，是根据所述用于调度PDSCH的DCI中的调制编码方案(Modulation Coding Scheme，MCS)域指示确定的。在一些实施例中，第八TBS缩放因子，是根据所述用于调度PDSCH的DCI中的调制编码方案MCS域指示确定的。
可选地，在一些实施例中，在所述用于调度PDSCH的DCI中不存在第一TB缩放域的情况下，终端设备可以根据所述用于调度PDSCH的DCI中的调制编码方案MCS域指示的值，确定第六TBS缩放因子和/或第八TBS缩放因子。
可选地，在另一些实施例中，在所述用于调度PDSCH的DCI是通过以下至少之一加扰的：小区无线网络临时标识C-RNTI、配置调度无线网络临时标识CS-RNTI、调制编码方案小区无线网络临时标识MCS-C-RNTI、临时小区无线网络临时标识TC-RNTI、系统消息无线网络临时标识SI-RNTI的情况下，终端设备可以根据所述用于调度PDSCH的DCI中的调制编码方案MCS域指示的值，确定第六TBS缩放因子和/或第八TBS缩放因子。
在一些实施例中，所述MCS域包括第一比特位和第二比特位；所述第一比特位用于指示所述第六TBS缩放因子和/或所述第八TBS缩放因子，所述第二比特位用于指示所述PDSCH对应的MCS。
可选地，第一比特位可以为一个比特位或多个比特位。可选地，在第一比特位为多个比特位的情况下，多个比特位可以为连续的比特位。
可选地，第二比特位可以为一个比特位或多个比特位。可选地，在第二比特位为多个比特位的情况下，多个比特位可以为连续的比特位。
可选地，第一比特位和第二比特位可以是相邻的比特位，或者，第一比特位和第二比特位可以是不相邻的比特位(即第一比特位和第二比特位之间可以间隔至少一个比特位)。例如，第一比特位中的最高比特位的位数为N，第二比特位中的最低比特位的位数为N+1。又例如，第一比特位中的最高比特位的位数为N，第二比特位中的最低比特位的位数为N+M；M为大于或等于2的整数。可选地，第一比特位和第二比特位之间间隔的至少一个比特位可以为预留位，或者可以为用于指示其它信息的比特位(即有效位)，或者一部分为预留位，另一部分为用于指示其它信息的比特位。
可选地，第一比特位和/或第二比特位可以为有效比特位。可选地，第一比特位可以为一个有效比特位或多个有效比特位。可选地，在第一比特位为多个有效比特位的情况下，多个有效比特位可以为连续的有效比特位。可选地，第二比特位可以为一个有效比特位或多个有效比特位。可选地，在第二比特位为多个有效比特位的情况下，多个有效比特位可以为连续的有效比特位。
可选地，第一比特位和第二比特位不重叠，例如，第一比特位为所述MCS域中的第一个和第二个有效比特位，则第二比特位不可以为所述MCS域中的第一个和第二个有效比特位。可选地，第一比特位和第二比特位可以重叠。例如，第一比特位和第二比特位可以存在至少一个比特位(例如1个比特位或2个比特位等)的重叠。
在一些实施例中，所述第一比特位为第一数量比特的最高有效位(Most Significant Bit，MSB)，所述第二比特位为第二数量比特的最低有效位(Least Significant Bit，LSB)。在另一些实施例中，所述第一比特位为第一数量比特的最低有效位，所述第二比特位为第二数量比特的最高有效位。
可选地，第一数量可以为能够指示TBS缩放因子的数量。可选地，第一数量可以与本申请之前协议规定的用于指示TBS缩放因子的数量相同或不同。例如，第一数量可以为1、2、3、4或5等等。第二数量可以为1、2、3、4或5等等。
在一些实施例中，所述第一比特位为2比特的最高有效位MSB，所述第二比特位为3比特的最低有效位LSB。在另一些实施例中，所述第一比特位为2比特的最低有效位，所述第二比特位为3比特的最高有效位。可选地，所述MCS域可以包括5比特的有效位。
在一些实施例中，所述终端设备获取MCS索引集合，所述第二比特位用于指示所述MCS索引集合中的所述PDSCH对应的MCS。
可选地，所述终端设备获取MCS索引集合，可以包括：所述终端设备接收MCS索引集合。在另一些实施例中，所述方法还包括：所述终端设备根据预配置确定MCS索引集合。
这样，对于网络设备侧来说，所述方法还包括：所述网络设备发送MCS索引集合；所述第二比特位用于指示所述MCS索引集合中的所述PDSCH对应的MCS。
可选地，本申请实施例中的MCS索引集合，可以为所述MCS域中的第二比特位能够指示的MCS索引集合。例如，所述MCS域中的第二比特位为三个有效比特位，第二比特位能够指示的MCS索引集合包括8个MCS索引。
在一些实施例中，所述第六TBS缩放因子是根据所述用于调度PDSCH的DCI中的一个或多个预留比特指示确定的。在另一些实施例中，所述用于调度PDSCH的DCI中的一个或多个预留比特被配置为第二TB缩放域，所述第六TBS缩放因子是根据所述第二TB缩放域指示确定的。
在一些实施例中，第八TBS缩放因子，是根据所述用于调度PDSCH的DCI中的一个或多个预留比特指示确定的。在另一些实施例中，所述用于调度PDSCH的DCI中的一个或多个预留比特被配置为第二TB缩放域，第八TBS缩放因子，是根据所述第二TB缩放域指示确定的。
可选地，在一些实施例中，在所述用于调度PDSCH的DCI中不存在第一TB缩放域的情况下，终端设备可以根据所述用于调度PDSCH的DCI中的一个或多个预留比特指示的值，确定第六TBS缩放因子和/或第八TBS缩放因子。
可选地，在另一些实施例中，在所述用于调度PDSCH的DCI是通过以下至少之一加扰的：小区无线网络临时标识C-RNTI、配置调度无线网络临时标识CS-RNTI、调制编码方案小区无线网络临时标识MCS-C-RNTI、临时小区无线网络临时标识TC-RNTI、系统消息无线网络临时标识SI-RNTI的情况下，终端设备可以根据所述用于调度PDSCH的DCI中的一个或多个预留比特指示的值，确定第六TBS缩放因子和/或第八TBS缩放因子。
可选地，所述用于调度PDSCH的DCI中所有的预留比特可以为至少一个预留比特，一个或多个预留比特可以是从至少一个预留比特中确定的。可选地，一个或多个预留比特可以为1个比特、2个比特、3个比特或4个比特等等。示例性地，本申请实施例中的一个或多个预留比特可以为2个比特。
可选地，2个比特可以为所述用于调度PDSCH的DCI中所有的预留比特中，最高比特位和第二高比特位对应的2个比特，或者，可以为最低比特位和第二低比特位对应的2个比特。可选地，2个比特可以为所述用于调度PDSCH的DCI中所有的预留比特中连续的2个预留比特，或者可以为所述用于调度PDSCH的DCI中所有的预留比特中非连续的2个比特。
可选地，所述用于调度PDSCH的DCI中所有的预留比特中，可以包括下行分配索引(Downlink Assignment Index，DAI)域。可选地，可以从DAI域中的所有的预留比特中，确定该一个或多个预留比特。可选地，DAI域中的所有的预留比特可以为至少一个比特。例如，DAI域中的所有的预留比特可以为1个比特、2个比特、3个比特或4个比特等。示例性地，DAI域中的所有的预留比特，可以为2个比特。可选地，TC-RNTI加扰CRC的DCI/DCI 1_0中的DAI域为保留比特。
可选地，所述用于调度PDSCH的DCI中所有的预留比特中，可以包括DAI域之外的其它预留比特。可选地，可以从其它预留比特中，确定该一个或多个预留比特。可选地，其它预留比特可以为至少一个比特。例如，其它预留比特可以为1个比特、2个比特、3个比特或4个比特等。可选地，2个比特可以为其它预留比特中，最高比特位和第二高比特位对应的2个比特。
可选地，第二TB缩放域可以是上述任一实施例中确定的一个或多个预留比特。可选地，第二TB缩放域可以为：所述用于调度PDSCH的DCI中所有的预留比特中的一个或多个预留比特。可选地，第二TB缩放域可以为：所述用于调度PDSCH的DCI中，DAI域中的预留比特中的一个或多个预留比特。可选地，第二TB缩放域可以为：所述用于调度PDSCH的DCI中，DAI域之外的其它预留比特中的一个或多个预留比特。
以TC-RNTI加扰CRC的DCI 1_0为例：可选地，TC-RNTI加扰CRC的DCI 1_0中的一个或多个预留比特，可以用于指示第六TBS缩放因子和/或第八TBS缩放因子；可选地，TC-RNTI加扰CRC的DCI 1_0中的DAI域，可以用于指示第六TBS缩放因子和/或第八TBS缩放因子；可选地，TC-RNTI加扰CRC的DCI 1_0中，除DAI域之外的其它预留比特中的一个或多个预留比特，可以用于指示第六TBS缩放因子和/或第八TBS缩放因子。可选地，TC-RNTI加扰CRC的DCI 1_0中的一个或多个预留比特，或者TC-RNTI加扰CRC的DCI 1_0中的DAI域，或者TC-RNTI加扰CRC的DCI 1_0中，除DAI域之外的其它预留比特中的一个或多个预留比特，可以被配置为第二TB缩放域。
在一些实施例中，可以使用下行分配索引DAI域中包括的2个保留比特，并通过该2个保留比特来指示第六TBS缩放因子或第八TBS缩放因子。在这种情况下，下行分配索引DAI域可以包括2个保留比特或2个以上的保留比特。
在另一些实施例中，下行分配索引DAI域可以配置为第二TB缩放域。可选地，在下行分配索引DAI域包括两个保留比特的情况下，可以将下行分配索引DAI域中的两个保留比特配置为第二TB缩放域。可选地，在下行分配索引DAI域包括两个以上的保留比特的情况下，可以从两个以上的保留比特中确定两个保留比特，从而将该两个保留比特对应的域被配置为第二TB缩放域。
可选地，第二TB缩放域可以为本申请之后的协议(本申请相较于现有协议新提出的方案)中规定的TB缩放域。
在一些实施例中，所述第二指示信息用于请求新的TBS缩放因子，可以理解为第二指示信息用于请求调整PDSCH的TBS的缩放因子。可选地，第三指示信息指示的一个或多个TBS的缩放因子，可以称为为新的TBS缩放因子，或者称为NTN系统中的TBS缩放因子，或者称为不同于现有协议中规定的TBS缩放因子。
可选地，第二指示信息可以为显示信息，通过显示信息来指示：请求PDSCH的TBS缩放，或者请求新的TBS缩放因子。例如，第二指示信息可以包括一个或多个比特，通过将一个或多个比特设置为特定值来指示：请求PDSCH的TBS缩放，或者请求新的TBS缩放因子。
可选地，第二指示信息可以为隐式信息，例如，第二指示信息可以隐式指示：请求PDSCH的TBS缩放，或者请求新的TBS缩放因子。
在一些实施例中，所述第二指示信息是通过物理随机接入信道PRACH携带的。例如，所述第二指示信息是PRACH中的信息。可选地，第二指示信息是通过PRACH显式携带的，或者，第二指示信息是通过PRACH隐式携带的。
在另一些实施例中，第二指示信息可以包括在其它上行信息中。例如，上行信息可以包括在Msg1、Msg3、MsgA或上行控制信息中。
在一些实施例中，所述终端设备发送第二指示信息，包括：所述终端设备在第一随机接入资源发送 所述PRACH；通过所述第一随机接入资源对应所述PRACH，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子。
这样，对于网络设备侧来说，所述网络设备在第一随机接入资源接收所述PRACH；通过所述第一随机接入资源对应所述PRACH，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子。
可选地，第一随机接入资源可以包括以下至少之一：第一随机接入的时域资源、第一随机接入的频域资源、第一PRACH格式对应的随机接入资源、第一随机接入信道机会(RACH Occasion，RO)对应的随机接入资源、第一PRACH前导的对应的随机接入资源。可选地，第一随机接入资源还可以包括其他，本申请实施例对此不一一列举。
可选地，第一PRACH格式在其它实施例中可以称为第一前导(preamble)格式。
在一些实施例中，终端设备发送第二指示信息，包括：所述终端设备发送第一PRACH格式对应的所述PRACH；通过所述第一PRACH格式对应所述PRACH，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子。
这样，对于网络设备侧来说，所述网络设备接收第二指示信息，包括：所述网络设备接收第一PRACH格式对应的所述PRACH；通过所述第一PRACH格式对应所述PRACH，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子。
在一些实施例中，终端设备发送第二指示信息，包括：所述终端设备在第一随机接入信道机会RO发送所述PRACH；通过所述第一随机接入信道机会RO对应所述PRACH，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子。
这样，对于网络设备侧来说，所述网络设备接收第二指示信息，包括：所述网络设备在第一随机接入信道机会RO接收所述PRACH；通过所述第一随机接入信道机会RO对应所述PRACH，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子。
在一些实施例中，终端设备发送第二指示信息，包括：所述终端设备发送包括第一PRACH前导的所述PRACH；通过所述PRACH包括所述第一PRACH前导，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子。
这样，对于网络设备侧来说，所述网络设备接收包括第一PRACH前导的所述PRACH；通过所述PRACH包括所述第一PRACH前导，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子。
在一些实施例中，第一随机接入资源、第一PRACH格式、第一RO、第一PRACH前导中的至少之一，是协议约定的，或者是所述终端设备根据预配置确定的，或者是网络设备向所述终端设备配置的。
在一些实施例中，所述用于调度PDSCH的DCI中包含第一传输块TB缩放域。在另一些实施例中，所述用于调度PDSCH的下行控制信息DCI是通过以下至少之一加扰的：寻呼无线网络临时标识P-RNTI、随机接入无线网络临时标识RA-RNTI、MsgB无线网络临时标识MsgB-RNTI。
可选地，第一传输块TB缩放域为一个或多个比特。例如，第一传输块TB缩放域为2比特，通过第一传输块TB缩放域中不同的取值，可以指示不同的TBS缩放因子。
可选地，所述用于调度PDSCH的下行控制信息DCI是通过以下至少之一加扰的：寻呼无线网络临时标识P-RNTI、随机接入无线网络临时标识RA-RNTI、MsgB无线网络临时标识MsgB-RNTI，可以对应于所述用于调度PDSCH的DCI中包含第一传输块TB缩放域。这样，通过第一传输块TB缩放域可以指示现有协议中的TBS缩放因子，和/或，可以指示未来协议(即本申请之后的协议)中的TBS缩放因子。可选地，在第一指示信息或第三指示信息指示一个TBS的缩放因子(该TBS缩放因子可以为未来协议中的缩放因子)的情况下，第一传输块TB缩放域指示现有协议中的TBS缩放因子，而不指示未来协议中的TBS缩放因子。可选地，在第一指示信息或第三指示信息指示多个TBS的缩放因子(该TBS缩放因子可以为未来协议中的缩放因子)的情况下，第一传输块TB缩放域可以指示现有协议中的TBS缩放因子，也可以指示未来协议中的多个TBS的缩放因子中的某一个TBS的缩放因子，也就是说，第一传输块TB缩放域可以同时指示现有协议和未来协议中的TBS缩放因子。
可选地，第一传输块TB缩放域可以指示一个或多个TBS的缩放因子中的某一个TBS的缩放因子。可选地，第一传输块TB缩放域指示的一个TBS的缩放因子所属的一个或多个TBS的缩放因子，可以是以下至少之一：本申请之前协议规定的一个或多个TBS的缩放因子、本申请之后协议规定的一个或多个TBS的缩放因子、第一指示信息或第三指示信息指示的一个或多个TBS的缩放因子，终端设备预先配置的一个或多个TBS的缩放因子。
在本申请任一实施例中，通过P-RNTI、RA-RNTI、MsgB-RNTI中至少之一加扰的DCI，可以与通过P-RNTI、RA-RNTI、MsgB-RNTI中至少之一加扰CRC的DCI/DCI 1_0作同一理解。
在一些实施例中，所述用于调度PDSCH的DCI中不包含第一TB缩放域。在另一些实施例中，所述用于调度PDSCH的DCI是通过以下至少之一加扰的：小区无线网络临时标识C-RNTI、配置调度无 线网络临时标识CS-RNTI、调制编码方案小区无线网络临时标识MCS-C-RNTI、临时小区无线网络临时标识TC-RNTI、系统消息无线网络临时标识SI-RNTI。
可选地，所述用于调度PDSCH的DCI是通过以下至少之一加扰的：小区无线网络临时标识C-RNTI、配置调度无线网络临时标识CS-RNTI、调制编码方案小区无线网络临时标识MCS-C-RNTI、临时小区无线网络临时标识TC-RNTI、系统消息无线网络临时标识SI-RNTI，可以对应于所述用于调度PDSCH的DCI中不包含第一TB缩放域。
可选地，在所述用于调度PDSCH的DCI中不包含第一TB缩放域的情况下，可以使用所述用于调度PDSCH的DCI中，其它指示域来指示一个或多个TBS的缩放因子中的某一个TBS的缩放因子。
可选地，其它指示域指示的一个TBS的缩放因子所在的一个或多个TBS的缩放因子，可以是以下至少之一：本申请之前协议规定的一个或多个TBS的缩放因子、本申请之后协议规定的一个或多个TBS的缩放因子、第一指示信息或第三指示信息指示的一个或多个TBS的缩放因子，终端设备预先配置的一个或多个TBS的缩放因子。
在一些实施场景中，在所述用于调度PDSCH的DCI中不包含第一TB缩放域的情况下，终端设备可以使用第一指示信息或第三指示信息指示的一个TBS的缩放因子，这样，由于第一指示信息或第三指示信息指示一个TBS的缩放因子，无需第一TB缩放域指示使用哪个TBS缩放因子，或者，终端设备可以使用第一指示信息或第三指示信息指示的多个TBS的缩放因子中的某一个TBS的缩放因子，终端设备可以通过其它指示域的指示，例如，终端设备可以通过所述用于调度PDSCH的DCI中其它指示域，从多个TBS的缩放因子中确定该某一个TBS的缩放因子。
在本申请任一实施例中，通过C-RNTI、CS-RNTI、MCS-C-RNTI、TC-RNTI、SI-RNTI中至少之一加扰的DCI，可以与通过C-RNTI、CS-RNTI、MCS-C-RNTI、TC-RNTI、SI-RNTI中至少之一加扰CRC的DCI/DCI 1_0作同一理解。
以下从另一方面说明本申请实施例的实施方式：
本申请实施例提供了一种PDSCH的TBS缩放方案，对于支持TBS缩放的PDSCH，可以进一步调整TBS缩放因子；对于不支持TBS缩放的PDSCH，可以引入TBS缩放方案。在本申请任一实施例中，调整TBS缩放因子可以理解为，设置不同于现有协议中的TBS缩放因子。
相关技术中，使用P-RNTI、RA-RNTI或MsgB-RNTI加扰CRC的DCI 1_0中包含2比特的TB缩放域(即上述的第一TB缩放域)，用于指示表1中不同TBS缩放因子，从而支持调度PDSCH的TBS缩放方案。表1为相关技术提供的一种TB缩放域与缩放因子之间的对应关系：
表1
TB缩放域 缩放因子
00 1
01 0.5
10 0.25
11  
以下说明TBS缩放方案增强的方案：
对于使用P-RNTI、RA-RNTI或MsgB-RNTI加扰CRC的DCI 1_0调度的PDSCH，当前支持的TBS缩放因子S最多可以将TBS减少为1/4。对于一些覆盖性能受限的通信场景，例如NTN系统，可以考虑进一步调整TBS缩放因子S，从而提升覆盖性能。
终端设备可以根据当前覆盖情况和是否具有调整/使用TBS缩放因子的能力，决定是否向网络设备请求调整TBS缩放因子(对应上述的第二指示信息)。其中，终端设备可以通过指定的随机接入资源隐式请求调整TBS缩放因子。例如终端设备使用指定的PRACH格式、或在指定的RO上发送PRACH、或发送指定的PRACH前导，隐式向网络设备请求调整TBS缩放因子。
图8为本申请实施例提供的一种终端设备接收TBS缩放因子流程示意图，如图8所示，该方法包括：
S801、终端设备使用指定的PRACH格式、或在指定的RO上发送PRACH、或发送指定的PRACH前导。
S802、终端设备接收TBS缩放因子。
可选地，终端设备接收的TBS缩放因子，可以是调整后的一个或多个TBS缩放因子。
对于TBS缩放因子的调整，具体有如下设计方案：系统消息广播TBS缩放因子和协议引入调整的TBS缩放因子。
以下说明系统消息广播TBS缩放因子的方案：
网络设备可以在系统消息中广播TBS缩放因子，并且应用于请求调整TBS缩放因子的终端设备。 进一步，对于系统消息广播TBS缩放因子，可以有如下方案：
方案1.1：系统消息广播一个TBS缩放因子。
系统消息广播一个TBS缩放因子S 1(即上述的第一TBS缩放因子)，终端设备请求调整TBS缩放因子后，则可以应用系统消息广播的TBS缩放因子S 1，考虑到相关技术中DCI 1_0也会指示一个TBS缩放因子S 2(即上述的第三TBS缩放因子)。因此，可以基于如下方案确定TBS缩放过程N info＝S·N RE·R·Q m·v最终应用的TBS缩放因子S。
方案1.1-1：广播的TBS缩放因子S 1代替DCI 1_0指示的TBS缩放因子S 2。即如果终端设备请求调整TBS缩放因子，则最终应用的TBS缩放因子S等于系统消息配置的缩放因子S 1；否则，TBS缩放因子S仍基于DCI 1_0中的TB缩放域指示确定。
方案1.1-2：广播的TBS缩放因子S 1与DCI 1_0指示的TBS缩放因子S 2联合确定最终应用的TBS缩放因子S(即上述的第二TBS缩放因子)，例如S＝S 1·S 2。即如果终端设备请求调整TBS缩放因子，则最终应用的TBS缩放因子S由系统消息配置的TBS缩放因子S 1和DCI 1_0指示的TBS缩放因子S 2联合确定；否则，TBS缩放因子S仍基于DCI 1_0中的TB缩放域指示确定。
以N RE＝1560，R＝120/1024，Q m＝2，v＝1为例，系统消息广播的TBS缩放因子S 1＝0.125，DCI 1_0中TB缩放域指示的TBS缩放因子S 2＝0.5。
若终端设备通过指定的随机接入资源请求调整TBS缩放因子，则对于方案1，终端设备将S1作为最终应用的TBS缩放因子，即N info＝S 1·N RE·R·Q m·v＝0.125·1560·120/1024·2·1＝45.7；对于方案2，终端设备联合S 1和S 2确定最终应用的TBS缩放因子，即N info＝S 1·S 2·N RE·R·Q m·v＝0.125·0.5·1560·120/1024·2·1＝22.8。
若终端设备没有请求调整TBS缩放因子，则基于DCI 1_0中的TB缩放域指示确定最终应用的TBS缩放因子，即N info＝S 2·N RE·R·Q m·v＝0.5·1560·120/1024·2·1＝182.8。
需要说明的是，若终端设备请求调整TBS缩放因子，但系统消息没有配置对应的值，则提供一个固定值(即上述的第四TBS缩放因子)，例如0.125，作为广播的TBS缩放因子S 1缺省值。这样，由于网络设备接收到终端设备请求TBS缩放因子的请求，因此网络设备也会根据协议或者预先配置使用第四TBS缩放因子。
方案1.2：系统消息广播多个TBS缩放因子。
系统消息广播多个TBS缩放因子S＝{S 1,S 2,…}(即上述的第一集合)，终端设备请求调整TBS缩放因子后，则可以应用系统消息广播的多个TBS缩放因子S＝{S 1,S 2,…}，并通过DCI 1_0中的TB缩放域进一步从S中指示最终应用的TBS缩放因子(即上述的第六TBS缩放因子)。
例如网络设备通过系统消息广播一个TBS缩放因子集合S＝{S 1＝0.125,S 2＝0.0625,S 3＝0.03125}，对于请求调整TBS缩放因子的终端设备，可以应用该广播的TBS缩放因子集合S，并基于DCI 1_0中的TB缩放域从S中指示确定应用的具体值：00指示集合S的第1个值S 1＝0.125，01指示集合S的第2个值S 2＝0.0625，10指示集合S的第3个值S 3＝0.03125。对于未请求调整TBS缩放因子的终端设备，最终应用的TBS缩放因子仍从现有协议支持的候选值中指示。表2为TB缩放域，与未请求调整TBS缩放因子后对应的缩放因子之间的对应关系，以及TB缩放域，与请求调整TBS缩放因子后对应的缩放因子之间的对应关系。
表2
TB缩放域 缩放因子(未请求调整TBS缩放因子) 缩放因子(请求调整TBS缩放因子)
00 1 广播的TBS缩放因子的第1个值
01 0.5 广播的TBS缩放因子的第2个值
10 0.25 广播的TBS缩放因子的第3个值
11    
需要说明的是，若终端设备请求调整TBS缩放因子，但系统消息没有配置对应的值，则提供一组固定的TBS缩放因子(即上述的第二集合)，例如集合S′＝{S′ 1＝0.125,S′ 2＝0.0625,S′ 3＝0.03125}作为广播的TBS缩放因子缺省值集合。且同样基于DCI 1_0中的TB缩放域从S′中指示确定应用的具体值：00指示集合S′的第1个值S′ 1＝0.125，01指示集合S′的第2个值S′ 2＝0.0625，10指示集合S′的第3个值S′ 3＝0.03125。表3为TB缩放域，与请求调整TBS缩放因子且网络设备配置TBS缩放因子集合后对应的缩放因子之间的对应关系，以及TB缩放域，与请求调整TBS缩放因子但网络设备未配置TBS缩放因子集合后对应的缩放因子之间的对应关系。
表3
Figure PCTCN2022113724-appb-000006
Figure PCTCN2022113724-appb-000007
以下说明协议引入调整的TBS缩放因子的方案：
在现有协议支持的TBS缩放因子候选值基础上，额外引入一组调整后的TBS缩放因子候选值{S 1,S 2,…}(即上述的第二集合)。此时，若终端设备未请求调整TBS缩放因子，则应用现有协议支持的TBS缩放因子候选值{1,0.5,0.25}；若终端设备请求调整TBS缩放因子，则应用新引入的TBS缩放因子候选值{S 1,S 2,…}，例如{S 1＝0.125,S 2＝0.0625,S 3＝0.03125}。且同样基于DCI 1_0中的TB缩放域从中指示最终应用的TBS缩放因子。表4为TB缩放域，与未请求TBS缩放因子调整后对应的缩放因子之间的对应关系，以及TB缩放域，与请求TBS缩放因子调整后对应的缩放因子之间的对应关系。
表4
TB缩放域 缩放因子(未请求TBS缩放因子调整) 缩放因子(请求TBS缩放因子调整)
00 1 0.125
01 0.5 0.0625
10 0.25 0.03125
11    
通过上述方案可以实现调整现有协议中的TBS缩放因子，通过支持更小的TBS缩放因子有效提升覆盖性能。
以下说明TBS缩放方案支持的方案：
对于使用除P-RNTI、RA-RNTI和MsgB-RNTI以外RNTI，如C-RNTI、CS-RNTI、MCS-C-RNTI、TC-RNTI或SI-RNTI，加扰CRC的DCI 1_0调度的PDSCH，当前不支持TBS缩放方案。在一些覆盖性能受限的通信场景中，例如NTN系统，考虑对使用上述RNTI加扰CRC的DCI 1_0调度的PDSCH引入TBS缩放方案，从而提升覆盖性能。
终端设备可以根据当前覆盖情况和是否具有对应PDSCH的TBS缩放能力，决定是否向网络设备请求TBS缩放。其中，终端设备可以通过指定的随机接入资源隐式请求执行PDSCH的TBS缩放。例如终端设备使用指定的PRACH格式、或在指定的RO上发送PRACH、或发送指定的PRACH前导，隐式向网络设备请求TBS缩放。
图9为本申请实施例提供的一种终端设备执行PDSCH的TBS缩放流程示意图，如图9所示，该方法包括：
S901、终端设备使用指定的PRACH格式、或在指定的RO上发送PRACH、或发送指定的PRACH前导。
S902、终端设备执行PDSCH的TBS缩放。
由于使用这些RNTI加扰CRC的DCI 1_0中目前不包含TB缩放域(即上述的第一TB缩放域)，无法指示确定TBS缩放因子。首先，对于TBS缩放因子的确定可以有如下方案：
方案2.1：系统消息广播一个TBS缩放因子。
系统消息广播一个TBS缩放因子S，终端设备请求TBS缩放后，则可以应用系统消息广播的TBS缩放因子S，并基于该缩放因子执行PDSCH的TBS缩放，即N info＝S·N RE·R·Q m·v。若系统消息没有配置TBS缩放因子，则提供一个固定值，例如0.5，作为广播的TBS缩放因子S缺省值。
以N RE＝1560，R＝120/1024，Q m＝2，v＝1为例，若终端设备通过指定的随机接入资源请求执行PDSCH的TBS缩放，且系统消息广播的TBS缩放因子S＝0.25，则终端设备将缩放因子引入到TBS的计算过程，即N info＝S·N RE·R·Q m·v＝0.25·1560·120/1024·2·1＝91.4。
方案2.2：系统消息广播多个TBS缩放因子。
系统消息广播多个TBS缩放因子S＝{S 1,S 2,…}，终端设备请求TBS缩放后，则可以应用系统消息广播的TBS缩放因子集合S＝{S1,S2,…}。若系统消息没有配置TBS缩放因子，则提供一组固定的TBS缩放因子，例如集合S′＝{S′ 1＝0.125,S′ 2＝0.0625,S′ 3＝0.03125}作为广播的TBS缩放因子的缺省值集合。
方案2.3：协议引入TBS缩放因子候选值。
在协议中引入一组TBS缩放因子候选值，用于支持使用上述RNTI加扰CRC的DCI 1_0调度PDSCH的TBS缩放方案。终端设备请求TBS缩放后，则可以应用引入的TBS缩放因子候选值。其中，该组候选值可以是现有协议支持的TBS缩放因子候选值{1,0.5,0.25}，即，表1中P-RNTI、RA-RNTI和 MsgB-RNTI对应的TBS缩放因子。也可以是针对使用上述RNTI加扰CRC的DCI 1_0调度PDSCH新引入的TBS缩放因子候选值，例如{0.125,0.0625,0.03125}。表5为PDSCH的TBS缩放因子的示意：
表5
Figure PCTCN2022113724-appb-000008
需要说明的是，对于方案2.2和方案2.3，由于存在多个TBS缩放因子，因此需要进一步通过DCI1_0指示最终应用的值。考虑到使用上述RNTI加扰CRC的DCI 1_0中不存在TB缩放域，对于TBS缩放因子的指示，有如下方案：
对使用上述RNTI加扰CRC的DCI 1_0中现有域进行重新解读，用于指示应用的TBS缩放因子。例如，可以对DCI 1_0中5比特MCS域进行重新解读，用于同时指示DCI 1_0调度PDSCH对应的MCS和TBS缩放因子。
例如，终端设备请求TBS缩放后，首先通过方案2.2或2.3确定TBS缩放因子集合，例如S＝{S 1＝1,S 2＝0.5,S 3＝0.25}，随后进一步通过DCI 1_0中MCS域的2比特最高有效位(MSB)指示应用的TBS缩放因子，如00指示集合S第1个值S 1，01指示集合S第2个值S 2，10指示集合S第3个值S 3。表6为DCI 1_0中MCS域的2 MSBs指示缩放因子的示意：
表6
MCS域2 MSBs 缩放因子
00 1
01 0.5
10 0.25
11  
同时，终端设备通过DCI 1_0中MCS域的3比特最低有效位(LSB)确定PDSCH对应的MCS。考虑到原5比特MCS域可以指示MCS索引0-28，而3 LSBs最多指示8个MCS索引，因此需要网络设备通过高层参数配置MCS索引候选值集合MCS＝{MCS 1,…,MCS 7}，随后DCI 1_0中MCS域的3 LSBs从该MCS索引候选值集合MCS指示具体应用的MCS索引。需要说明的是，若没有配置MCS索引候选值集合MCS，则提供一个固定的MCS索引候选值集合，例如集合MCS′＝{MCS′ 1,…,MCS′ 7}作为MCS索引候选值的缺省集合。表6为DCI 1_0中MCS域的3 LSBs指示MCS索引示意：
表7
Figure PCTCN2022113724-appb-000009
或者，在使用上述RNTI加扰CRC的DCI 1_0中引入TB缩放域。以使用TC-RNTI加扰CRC的DCI 1_0为例，当前其下行分配索引(DAI)域为2比特的保留比特，可以用于引入TB缩放域以指示应用的TBS缩放因子。即，若终端设备请求TBS缩放，则DAI域为0比特，TB缩放域为2比特用于指示应用的TBS缩放因子；若终端设备没有请求TBS缩放，则DAI域仍为2比特的保留比特，TB缩放域为0比特。
例如，终端设备请求TBS缩放后，首先通过方案2.2或2.3确定TBS缩放因子集合S＝{S 1＝1,S 2＝0.5,S 3＝0.25}，随后通过DCI 1_0中引入的TB缩放域指示应用的TBS缩放因子，如00指示集合第1个值S 1，01指示集合第2个值S 2，10指示集合第3个值S 3。表8为DCI 1_0中引入的TB缩放域与缩放因子的对应关系示意：
表8
TB缩放域 缩放因子
00 1
01 0.5
10 0.25
11  
本申请实施例提供了一种PDSCH的TBS缩放方案，对于支持TBS缩放的PDSCH，进一步调整TBS缩放因子；对于不支持TBS缩放的PDSCH，引入TBS缩放方案。从而有效提升PDSCH的覆盖性能。
进一步，系统消息广播一个或多个TBS缩放因子，可以实现更灵活的TBS缩放因子配置；协议中引入TBS缩放因子，可以在不增加信令开销的基础上实现TBS缩放因子调整。
对于TBS缩放因子的指示方案，重新解读DCI中现有域无需引入新的域，可以节省DCI信令开销；引入TB缩放域可以保证现有域的指示功能不受影响。
本申请实施例可以基于NTN系统和DCI 1_0调度的PDSCH进行设计，可扩展至任意应用PDSCH TBS缩放方案的系统，例如NR系统、LTE系统等。
以上结合附图详细描述了本申请的优选实施方式，但是，本申请并不限于上述实施方式中的具体细节，在本申请的技术构思范围内，可以对本申请的技术方案进行多种简单变型，这些简单变型均属于本申请的保护范围。例如，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合，为了避免不必要的重复，本申请对各种可能的组合方式不再另行说明。又例如，本申请的各种不同的实施方式之间也可以进行任意组合，只要其不违背本申请的思想，其同样应当视为本申请所公开的内容。又例如，在不冲突的前提下，本申请描述的各个实施例和/或各个实施例中的技术特征可以和现有技术任意的相互组合，组合之后得到的技术方案也应落入本申请的保护范围。
还应理解，在本申请的各种方法实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。此外，在本申请实施例中，术语“下行”、“上行”和“侧行”用于表示信号或数据的传输方向，其中，“下行”用于表示信号或数据的传输方向为从站点发送至小区的用户设备的第一方向，“上行”用于表示信号或数据的传输方向为从小区的用户设备发送至站点的第二方向，“侧行”用于表示信号或数据的传输方向为从用户设备1发送至用户设备2的第三方向。例如，“下行信号”表示该信号的传输方向为第一方向。另外，本申请实施例中，术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系。具体地，A和/或B可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
图10是本申请实施例提供的通信装置的结构组成示意图一，如图10所示，所述通信装置1000包括：通信单元1001，用于接接收系统消息，其中，所述系统消息携带第一指示信息；通信单元1001，还用于接收用于调度物理下行共享信道PDSCH的下行控制信息DCI；通信单元1001，还用于根据所述第一指示信息和/或所述DCI，接收传输块大小TBS缩放的所述PDSCH。
可选地，通信装置1000还包括确定单元，确定单元用于确定缩放的TBS，进而根据缩放的TBS接收传输块大小TBS缩放的所述PDSCH。
在一些实施例中，所述第一指示信息用于指示所述PDSCH的一个或者多个TBS的缩放因子，或，所述第一指示信息不用于指示所述PDSCH的一个或者多个TBS的缩放因子。
在一些实施例中，所述DCI包括第一TB缩放域，其中，所述第一TB缩放域用于指示所述PDSCH的一个或者多个TBS的缩放因子或无效值，所述无效值为无效的TBS的缩放因子或者为空；或，所述DCI不包括第一TB缩放域。
在一些实施例中，通信单元1001，还用于：根据所述第一指示信息，发送第二指示信息；所述第二指示信息用于请求物理下行共享信道PDSCH的传输块大小TBS缩放，或者所述第二指示信息用于请求新的TBS缩放因子；
通信单元1001，还用于：接收第三指示信息；
通信单元1001，还用于：根据所述第三指示信息和/或所述DCI，接收TBS缩放的所述PDSCH；
在一些实施例中，通信单元1001，还用于：根据所述第一指示信息或第三指示信息指示的第一缩放因子，接收TBS缩放的所述PDSCH。
在一些实施例中，通信单元1001，还用于：根据所述DCI指示的第二缩放因子，接收TBS缩放的所述PDSCH。
在一些实施例中，通信单元1001，还用于：根据所述第一指示信息或第三指示信息指示的第一缩放因子，和所述DCI指示的第二缩放因子，接收TBS缩放的所述PDSCH。
在一些实施例中，确定单元，还用于：根据所述第一指示信息或第三指示信息指示的第一缩放因子，和所述DCI指示的第二缩放因子的乘积，确定第三缩放因子；通信单元1001，还用于：根据所述第三缩放因子，接收TBS缩放的所述PDSCH。
在一些实施例中，通信单元1001，还用于：根据第四缩放因子，接收TBS缩放的所述PDSCH；其中，所述第四缩放因子是取值范围为大于0且小于或等于1的正数。
在一些实施例中，确定单元，还用于：根据所述第四缩放因子和所述DCI指示的第二缩放因子，确定第五缩放因子；通信单元1001，还用于：根据所述第五缩放因子，接收TBS缩放的所述PDSCH。
在一些实施例中，确定单元，还用于：根据所述第四缩放因子和所述DCI指示的所述第二缩放因子的乘积，确定所述第五缩放因子。
在一些实施例中，确定单元，还用于：根据所述第一指示信息或第三指示信息指示的包括一个或者多个缩放因子的第一集合，确定第六缩放因子；通信单元1001，还用于：根据所述第六缩放因子，接收TBS缩放的所述PDSCH。
在一些实施例中，确定单元，还用于：根据所述第六缩放因子和所述DCI指示的第二缩放因子，确定第七缩放因子；通信单元1001，还用于：根据所述第七缩放因子，接收TBS缩放的所述PDSCH。
在一些实施例中，确定单元，还用于：根据所述第六缩放因子和所述DCI指示的所述第二缩放因子的乘积，确定所述第七缩放因子。
在一些实施例中，确定单元，还用于：根据包括一个或者多个缩放因子的第二集合，确定第八缩放因子，其中，所述第二集合是协议约定的，或者，所述第二集合是终端设备根据预配置确定的，或者，所述第二集合为缺省值集合；通信单元1001，还用于：根据所述第八缩放因子，接收TBS缩放的所述PDSCH。
在一些实施例中，确定单元，还用于：根据所述第八缩放因子和所述DCI指示的第二缩放因子，确定第九缩放因子；通信单元1001，还用于：根据所述第九缩放因子，接收TBS缩放的所述PDSCH。
在一些实施例中，确定单元，还用于：根据所述第八缩放因子和所述DCI指示的所述第二缩放因子的乘积，确定所述第九缩放因子。
在一些实施例中，第六TBS缩放因子和/或第八TBS缩放因子，是根据所述用于调度PDSCH的DCI指示确定的。
在一些实施例中，第六TBS缩放因子和/或第八TBS缩放因子，是根据所述用于调度PDSCH的DCI中的第一TB缩放域指示确定的。
在一些实施例中，第六TBS缩放因子和/或第八TBS缩放因子，是根据所述用于调度PDSCH的DCI中的调制编码方案MCS域指示确定的。
在一些实施例中，所述MCS域包括第一比特位和第二比特位；所述第一比特位用于指示所述第六TBS缩放因子和/或所述第八TBS缩放因子，所述第二比特位用于指示所述PDSCH对应的MCS。
在一些实施例中，所述第一比特位为第一数量比特的最高有效位MSB，所述第二比特位为第二数量比特的最低有效位LSB；或者，
所述第一比特位为第一数量比特的最低有效位，所述第二比特位为第二数量比特的最高有效位。
在一些实施例中，所述第一比特位为2比特的最高有效位MSB，所述第二比特位为3比特的最低有效位LSB；或者，
所述第一比特位为2比特的最低有效位，所述第二比特位为3比特的最高有效位。
在一些实施例中，通信装置1000还包括获取单元，获取单元用于：获取MCS索引集合，所述第二比特位用于指示所述MCS索引集合中的所述PDSCH对应的MCS。
在一些实施例中，第六TBS缩放因子和/或第八TBS缩放因子，是根据所述用于调度PDSCH的DCI中的一个或多个预留比特指示确定的；或者，
所述用于调度PDSCH的DCI中的一个或多个预留比特被配置为第二TB缩放域，第六TBS缩放因子和/或第八TBS缩放因子，是根据所述第二TB缩放域指示确定的。
在一些实施例中，所述第二指示信息是通过物理随机接入信道PRACH携带的。
在一些实施例中，通信单元1001，还用于：在第一随机接入资源发送所述PRACH；通过所述第一随机接入资源对应所述PRACH，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子。
在一些实施例中，通信单元1001，还用于：发送第一PRACH格式对应的所述PRACH；通过所述第一PRACH格式对应所述PRACH，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子。
在一些实施例中，通信单元1001，还用于：在第一随机接入信道机会RO发送所述PRACH；通过所述第一随机接入信道机会RO对应所述PRACH，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子。
在一些实施例中，通信单元1001，还用于：发送包括第一PRACH前导的所述PRACH；通过所述PRACH包括所述第一PRACH前导，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子。
在一些实施例中，第一随机接入资源、第一PRACH格式、第一RO、第一PRACH前导中的至少之一，是协议约定的，或者是所述终端设备根据预配置确定的，或者是网络设备向所述终端设备配置的。
在一些实施例中，通信单元1001，还用于：在参考信号的测量值小于或等于门限值，和/或，所述终端设备有接收TBS缩放的PDSCH能力的情况下，发送所述第二指示信息。
在一些实施例中，所述用于调度PDSCH的DCI中包含第一传输块TB缩放域，和/或，所述用于调度PDSCH的下行控制信息DCI是通过以下至少之一加扰的：寻呼无线网络临时标识P-RNTI、随机接入无线网络临时标识RA-RNTI、MsgB无线网络临时标识MsgB-RNTI；
或，
所述用于调度PDSCH的DCI中不包含第一TB缩放域，和/或，所述用于调度PDSCH的DCI是通过以下至少之一加扰的：小区无线网络临时标识C-RNTI、配置调度无线网络临时标识CS-RNTI、调制编码方案小区无线网络临时标识MCS-C-RNTI、临时小区无线网络临时标识TC-RNTI、系统消息无线网络临时标识SI-RNTI。
图11是本申请实施例提供的通信装置的结构组成示意图二，如图10所示，所述通信装置1100包括：通信单元1101，用于发送系统消息，其中，所述系统消息携带第一指示信息；通信单元1101，还用于发送用于调度物理下行共享信道PDSCH的下行控制信息DCI；其中，所述第一指示信息和/或所述DCI，用于终端设备接收传输块大小TBS缩放的所述PDSCH。
在一些实施例中，所述第一指示信息用于指示所述PDSCH的一个或者多个TBS的缩放因子，或，所述第一指示信息不用于指示所述PDSCH的一个或者多个TBS的缩放因子。
在一些实施例中，所述DCI包括第一TB缩放域，其中，所述第一TB缩放域用于指示所述PDSCH的一个或者多个TBS的缩放因子或无效值，所述无效值为无效的TBS的缩放因子或者为空；或，所述DCI不包括第一TB缩放域。
在一些实施例中，通信单元1101，还用于：接收第二指示信息；所述第二指示信息用于请求物理下行共享信道PDSCH的传输块大小TBS缩放，或者所述第二指示信息用于请求新的TBS缩放因子；
通信单元1101，还用于：发送第三指示信息；
其中，所述第三指示信息和/或所述DCI，用于终端设备接收传输块大小TBS缩放的所述PDSCH。
在一些实施例中，所述第一指示信息或第三指示信息指示第一缩放因子；所述第一缩放因子用于所述终端设备接收TBS缩放的所述PDSCH。
在一些实施例中，所述DCI指示第二缩放因子；所述第二缩放因子用于所述终端设备接收TBS缩放的所述PDSCH。
在一些实施例中，所述第一指示信息或第三指示信息指示第一缩放因子，所述DCI中携带第二缩放因子；所述第一缩放因子和所述第二缩放因子，用于所述终端设备接收TBS缩放的所述PDSCH。
在一些实施例中，所述第一指示信息和/或所述DCI，用于所述终端设备根据第四缩放因子，接收TBS缩放的所述PDSCH；其中，所述第四缩放因子是取值范围为大于0且小于或等于1的正数。
在一些实施例中，所述第一指示信息和/或所述DCI，用于所述终端设备根据所述第四缩放因子和所述DCI指示的第二缩放因子，接收TBS缩放的所述PDSCH。
在一些实施例中，所述第一指示信息或第三指示信息指示包括一个或者多个缩放因子的第一集合；所述第一集合用于所述终端设备确定第六缩放因子，根据所述第六缩放因子，接收TBS缩放的所述PDSCH。
在一些实施例中，所述第一集合用于所述终端设备确定所述第六缩放因子，根据所述第六缩放因子和所述DCI指示的第二缩放因子，接收TBS缩放的所述PDSCH。
在一些实施例中，所述第一指示信息和/或所述DCI，用于所述终端设备根据包括一个或者多个缩放因子的第二集合，确定第八缩放因子，根据所述第八缩放因子，接收TBS缩放的所述PDSCH；
其中，所述第二集合是协议约定的，或者，所述第二集合是终端设备根据预配置确定的，或者，所述第二集合为缺省值集合。
在一些实施例中，所述第一指示信息和/或所述DCI，用于所述终端设备根据包括一个或者多个缩放因子的第二集合，确定第八缩放因子，根据所述第八缩放因子和所述DCI指示的第二缩放因子，接收TBS缩放的所述PDSCH。
在一些实施例中，第六TBS缩放因子和/或第八TBS缩放因子，是根据所述用于调度PDSCH的DCI指示确定的。
在一些实施例中，第六TBS缩放因子和/或第八TBS缩放因子，是根据所述用于调度PDSCH的 DCI中的第一TB缩放域指示确定的。
在一些实施例中，第六TBS缩放因子和/或第八TBS缩放因子，是根据所述用于调度PDSCH的DCI中的调制编码方案MCS域指示确定的。
在一些实施例中，所述MCS域包括第一比特位和第二比特位；所述第一比特位用于指示所述第六TBS缩放因子和/或所述第八TBS缩放因子，所述第二比特位用于指示所述PDSCH对应的MCS。
在一些实施例中，所述第一比特位为第一数量比特的最高有效位MSB，所述第二比特位为第二数量比特的最低有效位LSB；或者，
所述第一比特位为第一数量比特的最低有效位，所述第二比特位为第二数量比特的最高有效位。
在一些实施例中，所述第一比特位为2比特的最高有效位MSB，所述第二比特位为3比特的最低有效位LSB；或者，
所述第一比特位为2比特的最低有效位，所述第二比特位为3比特的最高有效位。
在一些实施例中，通信单元1101，还用于：发送MCS索引集合；所述第二比特位用于指示所述MCS索引集合中的所述PDSCH对应的MCS。
在一些实施例中，第六TBS缩放因子和/或第八TBS缩放因子，是根据所述用于调度PDSCH的DCI中的一个或多个预留比特指示确定的；或者，
所述用于调度PDSCH的DCI中的一个或多个预留比特被配置为第二TB缩放域，第六TBS缩放因子和/或第八TBS缩放因子，是根据所述第二TB缩放域指示确定的。
在一些实施例中，所述第二指示信息是通过物理随机接入信道PRACH携带的。
在一些实施例中，通信单元1101，还用于：在第一随机接入资源接收所述PRACH；通过所述第一随机接入资源对应所述PRACH，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子。
在一些实施例中，通信单元1101，还用于：接收第一PRACH格式对应的所述PRACH；通过所述第一PRACH格式对应所述PRACH，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子。
在一些实施例中，通信单元1101，还用于：在第一随机接入信道机会RO接收所述PRACH；通过所述第一随机接入信道机会RO对应所述PRACH，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子。
在一些实施例中，通信单元1101，还用于：接收包括第一PRACH前导的所述PRACH；通过所述PRACH包括所述第一PRACH前导，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子。
在一些实施例中，第一随机接入资源、第一PRACH格式、第一RO、第一PRACH前导中的至少之一，是协议约定的，或者是所述终端设备根据预配置确定的，或者是网络设备向所述终端设备配置的。
在一些实施例中，所述用于调度PDSCH的DCI中包含第一传输块TB缩放域，和/或，所述用于调度PDSCH的下行控制信息DCI是通过以下至少之一加扰的：寻呼无线网络临时标识P-RNTI、随机接入无线网络临时标识RA-RNTI、MsgB无线网络临时标识MsgB-RNTI；
或，
所述用于调度PDSCH的DCI中不包含第一TB缩放域，和/或，所述用于调度PDSCH的DCI是通过以下至少之一加扰的：小区无线网络临时标识C-RNTI、配置调度无线网络临时标识CS-RNTI、调制编码方案小区无线网络临时标识MCS-C-RNTI、临时小区无线网络临时标识TC-RNTI、系统消息无线网络临时标识SI-RNTI。
本领域技术人员应当理解，本申请实施例的上述通信装置的相关描述可以参照本申请实施例的通信方法的相关描述进行理解。
图12是本申请实施例提供的一种通信设备示意性结构图。该通信设备可以终端设备，也可以是网络设备。图12所示的通信设备1200包括处理器1210，处理器1210可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图12所示，通信设备1200还可以包括存储器1220。其中，处理器1210可以从存储器1220中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器1220可以是独立于处理器1210的一个单独的器件，也可以集成在处理器1210中。
可选地，如图12所示，通信设备1200还可以包括收发器1230，处理器1210可以控制该收发器1230与其他设备进行通信，具体地，可以向其他设备发送信息或数据，或接收其他设备发送的信息或数据。
其中，收发器1230可以包括发射机和接收机。收发器1230还可以进一步包括天线，天线的数量可以为一个或多个。
可选地，该通信设备1200具体可为本申请实施例的终端设备或网络设备，并且该通信设备1200可以实现本申请实施例的各个方法中由终端设备或网络设备实现的相应流程，为了简洁，在此不再赘述。
图13是本申请实施例的芯片的示意性结构图。图13所示的芯片1300包括处理器1310，处理器1310 可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图13所示，芯片1300还可以包括存储器1320。其中，处理器1310可以从存储器1320中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器1320可以是独立于处理器1310的一个单独的器件，也可以集成在处理器1310中。
可选地，该芯片1300还可以包括输入接口1330。其中，处理器1310可以控制该输入接口1330与其他设备或芯片进行通信，具体地，可以获取其他设备或芯片发送的信息或数据。
可选地，该芯片1300还可以包括输出接口1340。其中，处理器1310可以控制该输出接口1340与其他设备或芯片进行通信，具体地，可以向其他设备或芯片输出信息或数据。
可选地，该芯片可应用于本申请实施例中的终端设备或网络设备，并且该芯片可以实现本申请实施例的各个方法中由终端设备或网络设备实现的相应流程，为了简洁，在此不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
本申请实施例还提供了一种计算机程序产品，所述计算机程序产品包括计算机存储介质，所述计算机存储介质存储计算机程序，所述计算机程序包括能够由至少一个处理器执行的指令，当所述指令由所述至少一个处理器执行时实现本申请任一实施例中的通信方法。
在一些实施例中，该计算机程序产品可应用于本申请实施例中的终端设备或网络设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由终端设备或网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，本申请实施例中的计算机程序产品在另一些实施例中也可以称为软件产品。
本申请实施例还提供了一种计算机程序，所述计算机程序使得计算机执行本申请任一实施例中的通信方法。
在一些实施例中，该计算机程序可应用于本申请实施例中的终端设备或网络设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由终端设备或网络设备实现的相应流程，为了简洁，在此不再赘述。
本申请实施例的处理器、通信装置或者芯片可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器、通信装置或者芯片可以包括以下任一个或多个的集成：通用处理器、特定用途集成电路(Application Specific Integrated Circuit，ASIC)、数字信号处理器(Digital Signal Processor，DSP)、数字信号处理装置(Digital Signal Processing Device，DSPD)、可编程逻辑装置(Programmable Logic Device，PLD)、现场可编程门阵列(Field Programmable Gate Array，FPGA)、中央处理器(Central Processing Unit，CPU)、图形处理器(Graphics Processing Unit，GPU)、嵌入式神经网络处理器(neural-network processing units，NPU)、控制器、微控制器、微处理器、可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器或计算机存储介质可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解，上述存储器或计算机存储介质为示例性但不是限制性说明，例如，本申请实施例中的存储器还可以是静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synch link DRAM，SLDRAM)以及直接内存总线随机存 取存储器(Direct Rambus RAM，DR RAM)等等。也就是说，本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
在本申请的任一实施例中，时间间隔、时间段、时长范围内、时长内或时间窗内等，可以包括全部的端点时间，或者可以包括部分的端点时间(例如包括左端点时间而不包括右端点时间，或者包括右端点时间而不包括左端点时间)，或者不包括端点时间。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，)ROM、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。

Claims (63)

  1. 一种通信方法，所述方法包括：
    终端设备接收系统消息，其中，所述系统消息携带第一指示信息；
    所述终端设备接收用于调度物理下行共享信道PDSCH的下行控制信息DCI；
    根据所述第一指示信息和/或所述DCI，所述终端设备接收传输块大小TBS缩放的所述PDSCH。
  2. 根据权利要求1所述的方法，
    所述第一指示信息用于指示所述PDSCH的一个或者多个TBS的缩放因子，或，所述第一指示信息不用于指示所述PDSCH的一个或者多个TBS的缩放因子。
  3. 根据权利要求1或2所述的方法，
    所述DCI包括第一TB缩放域，其中，所述第一TB缩放域用于指示所述PDSCH的一个或者多个TBS的缩放因子或无效值，所述无效值为无效的TBS的缩放因子或者为空；
    或，
    所述DCI不包括第一TB缩放域。
  4. 根据权利要求1至3任一项所述的方法，所述根据所述第一指示信息和/或所述DCI，所述终端设备接收传输块大小TBS缩放的所述PDSCH，包括：
    根据所述第一指示信息、参考信号的测量值、终端设备有接收TBS缩放的PDSCH能力中的至少之一，所述终端设备发送第二指示信息；所述第二指示信息用于请求物理下行共享信道PDSCH的传输块大小TBS缩放，或者所述第二指示信息用于请求新的TBS缩放因子；
    所述终端设备接收第三指示信息；
    根据所述第三指示信息和/或所述DCI，所述终端设备接收TBS缩放的所述PDSCH。
  5. 根据权利要求1至4任一项所述的方法，根据所述第一指示信息，所述终端设备接收TBS缩放的所述PDSCH，包括：
    所述终端设备根据所述第一指示信息或第三指示信息指示的第一缩放因子，接收TBS缩放的所述PDSCH。
  6. 根据权利要求1至4任一项所述的方法，根据所述DCI，所述终端设备接收TBS缩放的所述PDSCH，包括：
    所述终端设备根据所述DCI指示的第二缩放因子，接收TBS缩放的所述PDSCH。
  7. 根据权利要求1至4任一项所述的方法，所述根据所述第一指示信息和/或所述DCI，所述终端设备接收TBS缩放的所述PDSCH，包括：
    所述终端设备根据所述第一指示信息或第三指示信息指示的第一缩放因子，和所述DCI指示的第二缩放因子，接收TBS缩放的所述PDSCH。
  8. 根据权利要求7所述的方法，所述终端设备根据所述第一指示信息或第三指示信息指示的第一缩放因子，和所述DCI指示的第二缩放因子，接收TBS缩放的所述PDSCH，包括：
    所述终端设备根据所述第一指示信息或第三指示信息指示的第一缩放因子，和所述DCI指示的第二缩放因子的乘积，确定第三缩放因子；
    所述终端设备根据所述第三缩放因子，接收TBS缩放的所述PDSCH。
  9. 根据权利要求1至4任一项所述的方法，所述终端设备接收TBS缩放的所述PDSCH，包括：
    所述终端设备根据第四缩放因子，接收TBS缩放的所述PDSCH；
    其中，所述第四缩放因子是取值范围为大于0且小于或等于1的正数。
  10. 根据权利要求9所述的方法，所述终端设备根据第四缩放因子，接收TBS缩放的所述PDSCH，包括：
    所述终端设备根据所述第四缩放因子和所述DCI指示的第二缩放因子，确定第五缩放因子；
    所述终端设备根据所述第五缩放因子，接收TBS缩放的所述PDSCH。
  11. 根据权利要求10所述的方法，所述终端设备根据所述第四缩放因子和所述DCI指示的第二缩放因子，确定第五缩放因子，包括：
    所述终端设备根据所述第四缩放因子和所述DCI指示的所述第二缩放因子的乘积，确定所述第五缩放因子。
  12. 根据权利要求1至4任一项所述的方法，根据所述第一指示信息，所述终端设备接收TBS缩放的所述PDSCH，包括：
    所述终端设备根据所述第一指示信息或第三指示信息指示的包括一个或者多个缩放因子的第一集合，确定第六缩放因子；
    所述终端设备根据所述第六缩放因子，接收TBS缩放的所述PDSCH。
  13. 根据权利要求12所述的方法，所述终端设备根据所述第六缩放因子，接收TBS缩放的所述PDSCH，包括：
    所述终端设备根据所述第六缩放因子和所述DCI指示的第二缩放因子，确定第七缩放因子；
    所述终端设备根据所述第七缩放因子，接收TBS缩放的所述PDSCH。
  14. 根据权利要求13所述的方法，所述终端设备根据所述第六缩放因子和所述DCI指示的第二缩放因子，确定第七缩放因子，包括：
    所述终端设备根据所述第六缩放因子和所述DCI指示的所述第二缩放因子的乘积，确定所述第七缩放因子。
  15. 根据权利要求1至4任一项所述的方法，所述终端设备接收传输块大小TBS缩放的所述PDSCH，包括：
    所述终端设备根据包括一个或者多个缩放因子的第二集合，确定第八缩放因子，其中，所述第二集合是协议约定的，或者，所述第二集合是终端设备根据预配置确定的，或者，所述第二集合为缺省值集合；
    所述终端设备根据所述第八缩放因子，接收TBS缩放的所述PDSCH。
  16. 根据权利要求15所述的方法，所述终端设备根据所述第八缩放因子，接收TBS缩放的所述PDSCH，包括：
    所述终端设备根据所述第八缩放因子和所述DCI指示的第二缩放因子，确定第九缩放因子；
    所述终端设备根据所述第九缩放因子，接收TBS缩放的所述PDSCH。
  17. 根据权利要求16所述的方法，所述终端设备根据所述第八缩放因子和所述DCI指示的第二缩放因子，确定第九缩放因子，包括：
    所述终端设备根据所述第八缩放因子和所述DCI指示的所述第二缩放因子的乘积，确定所述第九缩放因子。
  18. 根据权利要求12至17任一项所述的方法，第六TBS缩放因子和/或第八TBS缩放因子，是根据所述用于调度PDSCH的DCI指示确定的。
  19. 根据权利要求12至18任一项所述的方法，第六TBS缩放因子和/或第八TBS缩放因子，是根据所述用于调度PDSCH的DCI中的第一TB缩放域指示确定的。
  20. 根据权利要求12至18任一项所述的方法，第六TBS缩放因子和/或第八TBS缩放因子，是根据所述用于调度PDSCH的DCI中的调制编码方案MCS域指示确定的。
  21. 根据权利要求20所述的方法，所述MCS域包括第一比特位和第二比特位；所述第一比特位用于指示所述第六TBS缩放因子和/或所述第八TBS缩放因子，所述第二比特位用于指示所述PDSCH对应的MCS。
  22. 根据权利要求21所述的方法，所述第一比特位为第一数量比特的最高有效位MSB，所述第二比特位为第二数量比特的最低有效位LSB；或者，
    所述第一比特位为第一数量比特的最低有效位，所述第二比特位为第二数量比特的最高有效位。
  23. 根据权利要求21或22所述的方法，所述第一比特位为2比特的最高有效位MSB，所述第二比特位为3比特的最低有效位LSB；或者，
    所述第一比特位为2比特的最低有效位，所述第二比特位为3比特的最高有效位。
  24. 根据权利要求21至23任一项所述的方法，所述方法还包括：
    所述终端设备获取MCS索引集合，所述第二比特位用于指示所述MCS索引集合中的所述PDSCH对应的MCS。
  25. 根据权利要求12至18任一项所述的方法，第六TBS缩放因子和/或第八TBS缩放因子，是根据所述用于调度PDSCH的DCI中的一个或多个预留比特指示确定的；或者，
    所述用于调度PDSCH的DCI中的一个或多个预留比特被配置为第二TB缩放域，第六TBS缩放因子和/或第八TBS缩放因子，是根据所述第二TB缩放域指示确定的。
  26. 根据权利要求4所述的方法，所述第二指示信息是通过物理随机接入信道PRACH携带的。
  27. 根据权利要求26所述的方法，所述终端设备发送第二指示信息，包括：
    所述终端设备在第一随机接入资源发送所述PRACH；通过所述第一随机接入资源对应所述PRACH，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子。
  28. 根据权利要求26或27所述的方法，终端设备发送第二指示信息，包括：
    所述终端设备发送第一PRACH格式对应的所述PRACH；通过所述第一PRACH格式对应所述PRACH，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子；和/或，
    所述终端设备在第一随机接入信道机会RO发送所述PRACH；通过所述第一随机接入信道机会RO对应所述PRACH，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子；和/或，
    所述终端设备发送包括第一PRACH前导的所述PRACH；通过所述PRACH包括所述第一PRACH前导，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子。
  29. 根据权利要求27或28所述的方法，
    第一随机接入资源、第一PRACH格式、第一RO、第一PRACH前导中的至少之一，是协议约定的，或者是所述终端设备根据预配置确定的，或者是网络设备向所述终端设备配置的。
  30. 根据权利要求1至29任一项所述的方法，所述用于调度PDSCH的DCI中包含第一传输块TB缩放域，和/或，所述用于调度PDSCH的下行控制信息DCI是通过以下至少之一加扰的：寻呼无线网络临时标识P-RNTI、随机接入无线网络临时标识RA-RNTI、MsgB无线网络临时标识MsgB-RNTI；
    或，
    所述用于调度PDSCH的DCI中不包含第一TB缩放域，和/或，所述用于调度PDSCH的DCI是通过以下至少之一加扰的：小区无线网络临时标识C-RNTI、配置调度无线网络临时标识CS-RNTI、调制编码方案小区无线网络临时标识MCS-C-RNTI、临时小区无线网络临时标识TC-RNTI、系统消息无线网络临时标识SI-RNTI。
  31. 一种通信方法，所述方法包括：
    网络设备发送系统消息，其中，所述系统消息携带第一指示信息；
    所述网络设备发送用于调度物理下行共享信道PDSCH的下行控制信息DCI；
    其中，所述第一指示信息和/或所述DCI，用于终端设备接收传输块大小TBS缩放的所述PDSCH。
  32. 根据权利要求31所述的方法，
    所述第一指示信息用于指示所述PDSCH的一个或者多个TBS的缩放因子，或，所述第一指示信息不用于指示所述PDSCH的一个或者多个TBS的缩放因子。
  33. 根据权利要求31或32所述的方法，
    所述DCI包括第一TB缩放域，其中，所述第一TB缩放域用于指示所述PDSCH的一个或者多个TBS的缩放因子或无效值，所述无效值为无效的TBS的缩放因子或者为空；
    或，
    所述DCI不包括第一TB缩放域。
  34. 根据权利要求31至33任一项所述的方法，
    所述网络设备接收第二指示信息；所述第二指示信息用于请求物理下行共享信道PDSCH的传输块大小TBS缩放，或者所述第二指示信息用于请求新的TBS缩放因子；
    所述网络设备发送第三指示信息；
    其中，所述第三指示信息和/或所述DCI，用于终端设备接收传输块大小TBS缩放的所述PDSCH。
  35. 根据权利要求31至34任一项所述的方法，所述第一指示信息或第三指示信息指示第一缩放因子；所述第一缩放因子用于所述终端设备接收TBS缩放的所述PDSCH。
  36. 根据权利要求31至34任一项所述的方法，所述DCI指示第二缩放因子；所述第二缩放因子用于所述终端设备接收TBS缩放的所述PDSCH。
  37. 根据权利要求31至34任一项所述的方法，所述第一指示信息或第三指示信息指示第一缩放因子，所述DCI中携带第二缩放因子；所述第一缩放因子和所述第二缩放因子，用于所述终端设备接收TBS缩放的所述PDSCH。
  38. 根据权利要求31至34任一项所述的方法，所述第一指示信息和/或所述DCI，用于所述终端设备根据第四缩放因子，接收TBS缩放的所述PDSCH；
    其中，所述第四缩放因子是取值范围为大于0且小于或等于1的正数。
  39. 根据权利要求38所述的方法，所述第一指示信息和/或所述DCI，用于所述终端设备根据所述第四缩放因子和所述DCI指示的第二缩放因子，接收TBS缩放的所述PDSCH。
  40. 根据权利要求31至34任一项所述的方法，所述第一指示信息或第三指示信息指示包括一个或者多个缩放因子的第一集合；所述第一集合用于所述终端设备确定第六缩放因子，根据所述第六缩放因子，接收TBS缩放的所述PDSCH。
  41. 根据权利要求40所述的方法，所述第一集合用于所述终端设备确定所述第六缩放因子，根据所述第六缩放因子和所述DCI指示的第二缩放因子，接收TBS缩放的所述PDSCH。
  42. 根据权利要求31至34任一项所述的方法，所述第一指示信息和/或所述DCI，用于所述终端设备根据包括一个或者多个缩放因子的第二集合，确定第八缩放因子，根据所述第八缩放因子，接收TBS缩放的所述PDSCH；
    其中，所述第二集合是协议约定的，或者，所述第二集合是终端设备根据预配置确定的，或者，所述第二集合为缺省值集合。
  43. 根据权利要求42所述的方法，所述第一指示信息和/或所述DCI，用于所述终端设备根据包括一个或者多个缩放因子的第二集合，确定第八缩放因子，根据所述第八缩放因子和所述DCI指示的第二缩放因子，接收TBS缩放的所述PDSCH。
  44. 根据权利要求40至43任一项所述的方法，第六TBS缩放因子和/或第八TBS缩放因子，是根据所述用于调度PDSCH的DCI指示确定的。
  45. 根据权利要求40至44任一项所述的方法，第六TBS缩放因子和/或第八TBS缩放因子，是根据所述用于调度PDSCH的DCI中的第一TB缩放域指示确定的。
  46. 根据权利要求40至44任一项所述的方法，第六TBS缩放因子和/或第八TBS缩放因子，是根据所述用于调度PDSCH的DCI中的调制编码方案MCS域指示确定的。
  47. 根据权利要求46所述的方法，所述MCS域包括第一比特位和第二比特位；所述第一比特位用于指示所述第六TBS缩放因子和/或所述第八TBS缩放因子，所述第二比特位用于指示所述PDSCH对应的MCS。
  48. 根据权利要求47所述的方法，所述第一比特位为第一数量比特的最高有效位MSB，所述第二比特位为第二数量比特的最低有效位LSB；或者，
    所述第一比特位为第一数量比特的最低有效位，所述第二比特位为第二数量比特的最高有效位。
  49. 根据权利要求47或48所述的方法，所述第一比特位为2比特的最高有效位MSB，所述第二比特位为3比特的最低有效位LSB；或者，
    所述第一比特位为2比特的最低有效位，所述第二比特位为3比特的最高有效位。
  50. 根据权利要求47至49任一项所述的方法，所述方法还包括：
    所述网络设备发送MCS索引集合；所述第二比特位用于指示所述MCS索引集合中的所述PDSCH对应的MCS。
  51. 根据权利要求40至44任一项所述的方法，第六TBS缩放因子和/或第八TBS缩放因子，是根据所述用于调度PDSCH的DCI中的一个或多个预留比特指示确定的；或者，
    所述用于调度PDSCH的DCI中的一个或多个预留比特被配置为第二TB缩放域，第六TBS缩放因子和/或第八TBS缩放因子，是根据所述第二TB缩放域指示确定的。
  52. 根据权利要求34所述的方法，所述第二指示信息是通过物理随机接入信道PRACH携带的。
  53. 根据权利要求52所述的方法，所述网络设备接收第二指示信息，包括：
    所述网络设备在第一随机接入资源接收所述PRACH；通过所述第一随机接入资源对应所述PRACH，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子。
  54. 根据权利要求52或53所述的方法，其中，所述网络设备接收第二指示信息，包括：
    所述网络设备接收第一PRACH格式对应的所述PRACH；通过所述第一PRACH格式对应所述PRACH，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子；和/或，
    所述网络设备在第一随机接入信道机会RO接收所述PRACH；通过所述第一随机接入信道机会RO对应所述PRACH，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子；和/或，
    所述网络设备接收包括第一PRACH前导的所述PRACH；通过所述PRACH包括所述第一PRACH前导，指示请求PDSCH的TBS缩放，或者请求新的TBS缩放因子。
  55. 根据权利要求53或54所述的方法，
    第一随机接入资源、第一PRACH格式、第一RO、第一PRACH前导中的至少之一，是协议约定的，或者是所述终端设备根据预配置确定的，或者是网络设备向所述终端设备配置的。
  56. 根据权利要求31至55任一项所述的方法，所述用于调度PDSCH的DCI中包含第一传输块TB缩放域，和/或，所述用于调度PDSCH的下行控制信息DCI是通过以下至少之一加扰的：寻呼无线网络临时标识P-RNTI、随机接入无线网络临时标识RA-RNTI、MsgB无线网络临时标识MsgB-RNTI；
    或，
    所述用于调度PDSCH的DCI中不包含第一TB缩放域，和/或，所述用于调度PDSCH的DCI是通过以下至少之一加扰的：小区无线网络临时标识C-RNTI、配置调度无线网络临时标识CS-RNTI、调制编码方案小区无线网络临时标识MCS-C-RNTI、临时小区无线网络临时标识TC-RNTI、系统消息无线网络临时标识SI-RNTI。
  57. 一种通信装置，包括：
    通信单元，用于接收系统消息，其中，所述系统消息携带第一指示信息；
    所述通信单元，还用于接收用于调度物理下行共享信道PDSCH的下行控制信息DCI；
    所述通信单元，还用于根据所述第一指示信息和/或所述DCI，所述终端设备接收传输块大小TBS缩放的所述PDSCH。
  58. 一种通信装置，包括：
    通信单元，用于发送系统消息，其中，所述系统消息携带第一指示信息；
    所述通信单元，还用于发送用于调度物理下行共享信道PDSCH的下行控制信息DCI；
    其中，所述第一指示信息和/或所述DCI，用于终端设备接收传输块大小TBS缩放的所述PDSCH。
  59. 一种通信设备，包括：处理器和存储器，
    所述存储器存储有可在处理器上运行的计算机程序，
    所述处理器执行所述程序时实现权利要求1至30任一项或者31至56任一项所述方法。
  60. 一种计算机存储介质，所述计算机存储介质存储有一个或者多个程序，所述一个或者多个程序可被一个或者多个处理器执行，以实现权利要求1至30任一项或者31至56任一项所述方法。
  61. 一种芯片，包括：处理器，用于从存储器中调用并运行计算机程序，以实现如权利要求1至30任一项或者31至56任一项所述方法。
  62. 一种计算机程序产品，所述计算机程序产品包括计算机存储介质，所述计算机存储介质存储计算机程序，所述计算机程序包括能够由至少一个处理器执行的指令，当所述指令由所述至少一个处理器执行时实现权利要求1至30任一项或者31至56任一项所述方法。
  63. 一种计算机程序，所述计算机程序使得计算机执行如权利要求1至30任一项或者31至56任一项所述方法。
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